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1.
Environ Res ; 216(Pt 1): 114474, 2023 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-36202243

RESUMO

BACKGROUND: Phenolic compounds with potential adverse health effects are gradually being replaced. Little is known about the potential health risks of BPA, BP3, and TCS exposure in children and adolescents aged 6-19 years in the United States. OBJECTIVES: To determine trends and rates of change in hazard indices (HI) for three phenolics in U.S. children and adolescents for BPA, BP3, TCS, and to assess changes in gender, race/ethnicity, age, and potential health risks. METHODS: Metabolic biomonitoring data from field-collected urine samples from the National Health and Nutrition Examination Survey (NHANES) were utilized. Daily intake of three phenols (bisphenol A, benzophenone-3, and triclosan) between 2005 and 2016 in children and adolescents were obtained. Cumulative risk indicators, including hazard quotient (HQ), hazard index (HI), and maximum cumulative ratio (MCR), were used for the health risk assessment of the three phenols. RESULTS: During this period, the change in LSGM HI was -2.9% per cycle [95% Cl: (-3.7%, -2.2%)], and the percentage of participants with HI > 0.1 decreased from 15.6% to 10.5%. Children (6-11 years) had higher mean HI values than adolescents (12-19 years), while female had higher LSGM HI values than male. MCR values were generally low and negatively correlated with HI. However, the average value of MCR increased from 1.722 to 2.107 during this period. CONCLUSION: Exposure to phenolics among U.S. children and adolescents has changed in recent decades. However, gaps in data limit the interpretation of trends but legislative activity and advocacy campaigns by nongovernmental organizations may play a role in changing trends. Moreover, there are growing concerns about the potential health risks associated with exposure to multiple phenols in children and adolescents.


Assuntos
Poluentes Ambientais , Triclosan , Criança , Adolescente , Masculino , Feminino , Humanos , Estados Unidos , Triclosan/toxicidade , Triclosan/urina , Inquéritos Nutricionais , Poluentes Ambientais/toxicidade , Poluentes Ambientais/urina , Exposição Ambiental , Compostos Benzidrílicos/toxicidade , Compostos Benzidrílicos/urina , Fenóis/toxicidade , Fenóis/urina
2.
Environ Monit Assess ; 191(Suppl 2): 326, 2019 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-31254083

RESUMO

Dependency on groundwater has increased due to unprecedented growth of industries as well as settlements. Therefore, assessment of groundwater quality to determine its impact on human and environment has become essential. The major objective of this study was to frame a methodology for complete assessment of groundwater quality in a highly industrialized area comprising of iron, steel, fertilizer, cement, chemical, heavy machinery manufacturing, thermal power, coal mining, and allied industries. Physico-chemical parameters of water samples were analyzed from strategic locations during pre- and post-monsoon seasons. The primary analysis through the water quality index showed 50% of the sampling locations in pre-monsoon and 65% in post-monsoon seasons have very poor quality. Hence, the health risk calculated through hazard index indicates that the water is unsafe for drinking. Chemical indices such as sodium percentage, sodium adsorption ratio, residual sodium carbonate, permeability index, and magnesium hazard suggest that the water can be used for irrigation. High corrosivity ratio at 90% sampling locations specifies its unsuitability for use in industrial production. Factor analysis and other statistical methods justified that the pollution of groundwater was attributed to geogenic, as well as anthropogenic, activities. This research demonstrates the usefulness of interdisciplinary techniques for complete assessment of groundwater quality and representation of complex data set into a presentable and understandable form for proper communication with public, regulatory authorities, as well as policy makers, responsible for water management.


Assuntos
Monitoramento Ambiental/estatística & dados numéricos , Água Subterrânea/análise , Indústrias/estatística & dados numéricos , Monitoramento Ambiental/métodos , Análise Fatorial , Água Subterrânea/química , Água Subterrânea/normas , Humanos , Índia , Indústrias/classificação , Medição de Risco , Estações do Ano , Poluentes Químicos da Água/análise , Qualidade da Água
3.
Environ Int ; 185: 108502, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38368717

RESUMO

The tobacco emission condensate, henceforth referred to as "tobacco condensate," plays a critical role in assessing the toxicity of tobacco products. This condensate, derived from tobacco emissions, provides an optimized liquid concentrate for storage and concentration control. Thus, the validation of its constituents is vital for toxicity assessments. This study used tobacco condensates from 3R4F cigarettes and three heated tobacco product (HTP) variants to quantify and contrast organic compounds (OCs) therein. The hazard index (HI) for tobacco emissions and condensates was determined to ascertain the assessment validity. The total particulate matter (TPM) for 3R4F registered at 17,667 µg cig-1, with its total OC (TOC) at 3777 µg cig-1. HTPs' TPM and TOC were 9342 ± 1918 µg cig-1 and 5258 ± 593 µg stick-1, respectively. 3R4F's heightened TPM likely arises from tar, while HTPs' OC concentrations are influenced by vegetable glycerin (2236-2688 µg stick-1) and propylene glycol (589-610 µg stick-1). During the condensation process, a substantial proportion of OCs in 3R4F smoke underwent significant concentration decreases, in contrast to HTPs, where fewer than half of the examined OCs exhibited notable concentration declines. The HI for tobacco emissions exhibited a marginally higher value compared to tobacco condensate, with variations ranging from 7.92% (HTPs) to 18.6% (3R4F), denoting a minimal differential. These observations emphasize the importance of accurate OC recovery techniques to maintain the validity and reliability of toxicity assessments based on tobacco condensates. This study not only deepens the comprehension of chemical behaviors in tobacco products but also establishes a novel benchmark for their toxicity evaluation, with profound implications for public health strategies and consumer protection.


Assuntos
Produtos do Tabaco , Aerossóis/análise , Material Particulado/toxicidade , Material Particulado/química , Reprodutibilidade dos Testes , Fumaça , Produtos do Tabaco/análise
4.
Environ Sci Pollut Res Int ; 30(48): 105329-105352, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37713085

RESUMO

The Loktak Lake, a Ramsar site in Northeast India, is known for its rich biodiversity that includes a variety of macrophyte species, most of which have not been studied for their phytoremediation capacities and potential toxicity via consumption of the edible species. Therefore, a comprehensive assessment was conducted to evaluate the accumulation of selected heavy metals and nutrients in 10 dominant macrophyte species growing in Loktak Lake and to assess the potential health risks associated with consumption of the edible plants. The concentrations of nutrients such as total phosphorus (TP), total nitrogen (TN), potassium (K), calcium (Ca), magnesium (Mg), and heavy metals such as copper (Cu), manganese (Mn), zinc (Zn), and iron (Fe) were found to be in the order of plant > sediment > water. The bioaccumulation factors (BAFs) revealed high efficiency of most plants to accumulate heavy metals and nutrients in their tissues from the lake water and sediments, indicating their potential to be used as phytoremediators. Translocation factors (TFs) were also estimated to determine the efficiency of the plants to translocate elements from root to shoot. Colocasia esculenta and Polygonum perfoliatum exhibited the highest BAF values, whereas Colocasia esculenta, Hedychium flavum, Phragmites karka, and Oenanthe javanica exhibited the highest TF values for most elements. Target hazard quotients (THQs) revealed potential health risks associated with one or more heavy metals in the plants, except for Zn, whose THQ values were below the level of concern in all the edible plant species. The hazard index (HI) signifying potential non-carcinogenic health risk from the combined effects of all the heavy metals was highest for Polygonum perfoliatum, indicating a potentially higher risk to health if this edible macrophyte is regularly consumed in higher quantities and may pose long-term health effects to the exposed population.


Assuntos
Metais Pesados , Poluentes Químicos da Água , Lagos , Bioacumulação , Monitoramento Ambiental , Índia , Metais Pesados/análise , Zinco , Compostos Orgânicos , Água , Medição de Risco , Nutrientes , Poluentes Químicos da Água/análise
5.
Sci Total Environ ; 855: 158873, 2023 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-36126704

RESUMO

Field measurements of volatile organic compounds (VOCs) were conducted simultaneously at an urban site and one industrial park site in Beijing in summer. The VOCs concentrations were 94.3 ± 157.8 ppbv and 20.7 ± 8.9 ppbv for industrial and urban sites, respectively. Alkanes and aromatics were the major contributors to VOCs in industrial site, while oxygenated volatile organic compounds (OVOCs) contributed most in urban site. The most abundant VOC species were n-pentane and formaldehyde for industrial site and urban site, respectively. The calculated ozone formation potential (OFP) and OH loss rates (LOH) were 621.1 ± 1491.9 ppbv (industrial site), 102.9 ± 37.3 ppbv (urban site), 22.0 ± 39.0 s-1 (industrial site) and 5.3 ± 2.2 s-1 (urban site), respectively. Based on the positive matrix factorization (PMF) model, solvent utilization I (34.1 %), solvent utilization II (27.9 %), mixture combustion source (19.3 %), OVOCs related source (9.6 %) and biogenic source (9.1 %) were identified in the industrial site, while OVOCs related source (27.8 %), vehicle exhaust (22.1 %), solvent utilization (19.3 %), coal combustion (16.0 %) and biogenic source (14.8 %) were identified in the urban site. The results of O3-VOCs-NOx sensitivity indicated that O3 formation were respectively under the VOC-limited and NOx-limited conditions in Beijing urban and industrial regions. Additionally, aromatics accounted remarkable SOA formation ability both in the two sites, and SOA potentials of xylene, toluene and ethylbenzene as the indicator species for the solvent utilization in industrial site were remarkable higher than those obtained in urban regions. The hazard index values in the industrial and urban sites were 1.72 and 3.39, respectively, suggesting a high non-carcinogenic risks to the exposed population. Formaldehyde had the highest carcinogenic risks in the two sites, and the cumulative carcinogenic risks in the industrial site and urban site were 1.95 × 10-5 and 1.21 × 10-5, respectively.


Assuntos
Poluentes Atmosféricos , Ozônio , Compostos Orgânicos Voláteis , Compostos Orgânicos Voláteis/análise , Poluentes Atmosféricos/análise , Pequim , Monitoramento Ambiental/métodos , Emissões de Veículos/análise , Ozônio/análise , Medição de Risco , Solventes , Formaldeído , China
6.
Toxics ; 11(5)2023 Apr 26.
Artigo em Inglês | MEDLINE | ID: mdl-37235224

RESUMO

Chemical mixture risk assessment has, in the past, primarily focused on exposures quantified in the external environment. Assessing health risks using human biomonitoring (HBM) data provides information on the internal concentration, from which a dose can be derived, of chemicals to which human populations are exposed. This study describes a proof of concept for conducting mixture risk assessment with HBM data, using the population-representative German Environmental Survey (GerES) V as a case study. We first attempted to identify groups of correlated biomarkers (also known as 'communities', reflecting co-occurrence patterns of chemicals) using a network analysis approach (n = 515 individuals) on 51 chemical substances in urine. The underlying question is whether the combined body burden of multiple chemicals is of potential health concern. If so, subsequent questions are which chemicals and which co-occurrence patterns are driving the potential health risks. To address this, a biomonitoring hazard index was developed by summing over hazard quotients, where each biomarker concentration was weighted (divided) by the associated HBM health-based guidance value (HBM-HBGV, HBM value or equivalent). Altogether, for 17 out of the 51 substances, health-based guidance values were available. If the hazard index was higher than 1, then the community was considered of potential health concern and should be evaluated further. Overall, seven communities were identified in the GerES V data. Of the five mixture communities where a hazard index was calculated, the highest hazard community contained N-Acetyl-S-(2-carbamoyl-ethyl)cysteine (AAMA), but this was the only biomarker for which a guidance value was available. Of the other four communities, one included the phthalate metabolites mono-isobutyl phthalate (MiBP) and mono-n-butyl phthalate (MnBP) with high hazard quotients, which led to hazard indices that exceed the value of one in 5.8% of the participants included in the GerES V study. This biological index method can put forward communities of co-occurrence patterns of chemicals on a population level that need further assessment in toxicology or health effects studies. Future mixture risk assessment using HBM data will benefit from additional HBM health-based guidance values based on population studies. Additionally, accounting for different biomonitoring matrices would provide a wider range of exposures. Future hazard index analyses could also take a common mode of action approach, rather than the more agnostic and non-specific approach we have taken in this proof of concept.

7.
Environ Sci Pollut Res Int ; 29(4): 5661-5673, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34424471

RESUMO

The purpose of this study was to assess heavy metal contamination in soil, plants, earthworms, and chicken in farmlands adjacent to an old mining site and to evaluate the potential exposure risks to humans through the consumption of chicken. For this purpose, soil, earthworms, plant, chickens, and eggs were sampled from 5 sites following a gradient of contamination. All samples were analyzed for heavy metals (Pb, Cd, Cu, and Zn). A food chain model was used in order to characterize heavy metal transfer between soil-plant-earthworm and chicken organs. Furthermore, target hazard quotient (THQ), estimated daily intake (EDI), and hazard index (HI) were employed to assess human health risks posed by heavy metal contamination. Despite the higher level of Pb, our data related to the calculation of EDI and THQ suggested that local consumers are more at risk of Cd contamination. The calculated HI showed values ranging from 2.58 to 4.74 for adults, and up to 12.34 for children, indicating a considerable risk to the health of local inhabitants, especially children. This study highlighted the crucial role of diets based on chickens grown in contaminated areas, on health risks especially for children.


Assuntos
Metais Pesados , Poluentes do Solo , Animais , Galinhas , China , Monitoramento Ambiental , Contaminação de Alimentos/análise , Humanos , Metais Pesados/análise , Medição de Risco , Poluentes do Solo/análise
8.
J Environ Health Sci Eng ; 20(1): 79-100, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35669809

RESUMO

Purpose: Presence of heavy metals in Peenya industries is considered a major environmental and human health risk. The purpose of this research is to determine the concentrations of trace elements in urban industrial soils in north Bengaluru in order to assess the degree of soil pollution and to evaluate environmental and human health risk. Methods: Twelve soil samples during July-2016 were taken from Peenya industrial sites at different depth viz., 0-Hft., 1-3 ft., and 3-5 ft. heavy metals (As, Cd, Co, Cr+3, Cu, Fe, Mn, Pb, Sr, V, and Zn) were determined by inductively coupled plasma mass spectrometry (ICP-MS). Contamination Factor, Enrichment Factor, Pollution Index, Modified Pollution Index, indices of pollution, Toxic Unit (TU), Hazard Quotient (HQ), Hazard Index (HI), Total Hazard Index (THI), Cancer Risk (CR), and Lifetime Cancer Risk (LCR) were used to evaluate the environmental and potential health hazard risks of human beings. Results: Results showed that Cr+3 concentration exceeded the threshold limit of 60 mg/kg and 66.66%, 50%, and 41.66% showing more than the threshold limit at 0-1 ft., 1-3 ft. and 3-5 ft. depth soil samples. Single pollution indices showed that the study site was contaminated with chromium concentration. Nemerow pollution index showed that majority of soil samples were in the very high level of pollution. THI values showing <1 indicating that there were non-carcinogenic risks for children and less risk for adults. Based on LCR for children, 100% of soil samples were at high risk. LCR for Cr+3 concentrations of the soils were found higher than the threshold value of 1.00E-04, indicating a significant carcinogenic risk. Conclusions: The study area is polluted, mainly with Chromium, whereas environmental risk is limited to a small part of it. This study can be used as a reference point to develop future long-term risk assessment plans on the probable movement of heavy metals in urban soils to human beings.

9.
Environ Pollut ; 285: 117414, 2021 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-34049136

RESUMO

The human health risks caused by heavy metal contamination (As, Cd, Cr, Cu, Hg, Pb, Ni, and Zn) in the surface water of the Houjing River, the most contaminated river in southern Taiwan, were assessed in this study. Firstly, heavy metal contamination was evaluated by the contamination factors (CF) and the metal indexes (MI). Secondly, the human health risks due to heavy metal contamination were simulated using the Adaptive Risk Assessments Modeling System (ARAMS) through three scenarios; fish ingestion, dermal water contact, and incidental water ingestion during swimming. The hazard quotient (HQ) and the hazard index (HI) were used to evaluate non-carcinogenic risks, while carcinogenic risks were estimated by the lifetime cancer incidence risk index (CR) and the cumulative cancer risk (CCR). The results showed that the synergistic contamination of heavy metals in the surface water was severe (MI = 12.4), with the highest contribution from Cu, Ni, and Pb. Copper had the highest non-carcinogenic risk at the "adverse effect" level, while Ni and Cr had the highest carcinogenic risk at an "unacceptable" level. In addition, the cumulative risks of fish ingestion (HIFI = 6.75 and CCRFI = 1.25E-03) were significantly higher than those of the swimming scenarios (HI(DC + WI) = 1.94E-03 and CCR(DC + WI) = 9.32E-08). The results from this study will be beneficial for immediate and future contamination control measures and human health management plans for this study area. This study has also demonstrated the effectiveness of using ARAMS in human health risk assessment.


Assuntos
Metais Pesados , Rios , Animais , China , Monitoramento Ambiental , Humanos , Indústrias , Metais Pesados/análise , Medição de Risco
10.
Environ Sci Pollut Res Int ; 28(39): 55166-55175, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34129166

RESUMO

The heavy metals namely Fe, As, Cu, Cd, and Pb were investigated in two marine fishes silver pomfret (Pampus argentus) and torpedo scad (Megalaspis cordyla), and three seafoods sibogae squid (Loligo sibogae), Indian white prawn (Fenneropenaeus indicus), and mud crab (Scylla serrata) by using inductively coupled plasma spectrophotometer (ICP-MS) from two renowned fish harvesting coastal area of Malaysia named as Kedah and Selangor. Among the target heavy metals, highest mean concentration of As and Fe were found in Scylla serrata (72.14±7.77 µg/g) in Kedah and Megalaspis cordyla (149.40±2.15 µg/g) in Selangor. Pearson's correlation results showed As-Fe-Cd-Cu originated from the same source. Maximum estimated daily intake (EDI) values of Scylla serrata were found 175.25 µg/g/day and 100.81 µg/g/day for child in both Kedah and Selangor areas respectively. Hazard quotient (HQ) and hazard index (HI) results revealed that local consumers of Kedah and Selangor will face high chronic risk if they consume Scylla serrata, Fenneropenaeus indicus, and Megalaspis cordyla on regular basis in their diet. Carcinogenic risk results suggested that all the studied species pose very high risk of cancer occurrences to the consumers in both areas. Therefore, it could be recommended that consumers should be aware when they are consuming these marine species since they can pose serious health risk associated with prolonged consumption.


Assuntos
Metais Pesados , Animais , Criança , Peixes , Humanos , Malásia , Medição de Risco , Alimentos Marinhos
11.
Huan Jing Ke Xue ; 41(7): 3056-3065, 2020 Jul 08.
Artigo em Zh | MEDLINE | ID: mdl-32608877

RESUMO

To understand the characteristics and potential hazards of volatile organic compounds (VOCs) emitted from different industrial factories in Zhengzhou, several representative factories have been selected for sample collection using canisters; the samples were subsequently analyzed by GC-MS/FID system, from which the composition and risk of VOCs are discussed in this study. It was found that OVOCs, especially ethyl acetate and isopropanol, were the most important species originating from printing factories, which accounted for more than 93.1% of total VOCs. The major components related to manufacturing industries, including automobile, furniture, and coating, were aromatics, mainly m/p-xylene, o-xylene, and ethylbenzene, which contributed 33.5%-90.0% to VOCs. Halogenated hydrocarbons made the largest contribution (52.3%) to VOCs in the food processing industry. The main components of VOCs were halogenoalkanes (25.5%) and alkanes (28.8%) in rubber factories. As for graphite carbon factories, the main components of VOCs were aromatics (28.5%) and alkanes (24.1%). Compared with previous studies, the VOC emission characteristics of factories involving solvent usage in Zhengzhou are consistent with those in other cities, but the compositional information of VOCs varies across different factories, even within the same industry, due to the different production processes and raw materials used. Risk assessment showed that the concentration of VOCs emitted from solvent factories are positively correlated with ozone formation potential (OFP) and the hazard index (HI). Specifically, benzene, toluene, ethylbenzene, xylene, and other C6-C8 aromatic hydrocarbons contributed significantly to OFP and HI. The HI values were 1.18 and 2.74 in automobile manufacturing factory NO.3 and wooden furniture factory NO.5, respectively, which were higher than the limits stated by EPA regulations because of the different production processes and raw materials, and the VOCs of the factories were mainly composed of aromatics; in particular, C6-C9 benzene series contributed significantly to HI and OFP. Therefore, it is necessary to control VOCs originating from industries involving solvent usage.


Assuntos
Poluentes Atmosféricos/análise , Compostos Orgânicos Voláteis/análise , Cidades , Monitoramento Ambiental , Medição de Risco
12.
Environ Sci Pollut Res Int ; 27(36): 45018-45030, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32772286

RESUMO

Traceability offers significant information about the quality and safety of Chinese Angelica, a medicine and food homologous substance. In this study, a systematic four-step strategy, including sample collection, specific metal element fingerprinting, multivariate statistical analysis, and benefit-risk assessment, was developed for the first time to identify Chinese Angelica based on geographical origins. Fifteen metals in fifty-six Chinese Angelica samples originated from three provinces were analyzed. The multivariate statistical analysis model established, involving hierarchical cluster analysis (HCA), principal component analysis (PCA), and self-organizing map clustering analysis was able to identify the origins of samples. Furthermore, benefit-risk assessment models were created by combinational calculation of chemical daily intake (CDI), hazard index (HI), and cancer risk (CR) levels to evaluate the potential risks of Chinese Angelica using as traditional Chinese medicine (TCM) and food, respectively. Our systematic strategy was well convinced to accurately and effectively differentiate Chinese Angelica based on geographical origins.


Assuntos
Angelica , Medicina Tradicional Chinesa , Metais , Análise de Componente Principal , Medição de Risco
13.
Biomed Environ Sci ; 32(11): 839-853, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31910941

RESUMO

OBJECTIVE: This study was conducted to evaluate the concentration of potentially toxic elements (PTEs) such as arsenic (As), cadmium (Cd), mercury (Hg), and lead (Pb) in fruit samples collected from Markazi Province, Iran. A probabilistic health risk assessment due to ingestion of PTEs through the consumption of these fruits was also conducted. METHODS: The concentration of PTEs in 90 samples of five types of fruits (n = 3) collected from six geographic regions in Markazi Province was measured. The potential health risk was evaluated using a Monte Carlo simulation model. RESULTS: A significant difference was observed in the concentration of PTEs between fruits as well as soil and water samples collected from different regions in Markazi Province. The order of PTE concentration in the soil and water samples was as follows: Pb > As > Hg > Cd. Furthermore, the highest level of transfer factor for Cd and Hg correlated with the grape. The estimated daily intake for adults and children was lower than the recommended tolerable daily intake. CONCLUSION: The population in Markazi Province, Iran, is not at considerable noncarcinogenic or carcinogenic risk due to the ingestion of PTEs through the consumption of the examined fruits.


Assuntos
Frutas/química , Adolescente , Adulto , Arsênio/análise , Arsênio/metabolismo , Arsênio/toxicidade , Cádmio/análise , Cádmio/metabolismo , Cádmio/toxicidade , Ingestão de Alimentos , Feminino , Contaminação de Alimentos/análise , Frutas/metabolismo , Frutas/toxicidade , Humanos , Irã (Geográfico) , Chumbo/análise , Chumbo/metabolismo , Chumbo/toxicidade , Masculino , Mercúrio/análise , Mercúrio/metabolismo , Mercúrio/toxicidade , Pessoa de Meia-Idade , Medição de Risco , Adulto Jovem
14.
Food Chem Toxicol ; 113: 204-210, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-29407473

RESUMO

The current study was undertaken to determine the concentration of Hg and Pb in ten types of collected green leafy vegetables and herbs from different agricultural sites of Markazi province, Iran as well as the gathered water and soil around them using inductively coupled plasma-optical emission spectroscopy (ICP-OES). Also, the potential health risk assessment by using target hazard quotient (THQ) and hazard index (HI) parameters was estimated. Based on the accumulation order, Artemisia dracunculus L with 56.147 ±â€¯17.30 µg/kg and Spinacia oleracea L with 1733.62 ±â€¯2264.7 µg/kg can uptake and accumulate more concentration of Pb and Hg in their tissues, respectively. Regarding gathered soil around vegetables, the concentration of Hg and Pb were measured as 52.056 ±â€¯16.25 µg/kg and 4993.83 ±â€¯1287.8 µg/kg, respectively. The transfer factor (TF) demonstrated that vegetables and herbs could absorb a high amount of Hg from the soil while these plants uptake less concentration of Pb thought their green leaves. The non-carcinogenic risk assessment showed the minimum, and maximum THQ was related to 15-24 and 35-44 age groups in the urban and rural consumers. Also, HI in the urban and rural areas was calculated as 8.492 and 9.012, respectively. Since HI > 1, exposure of the urban and rural areas of Markazi province to non-carcinogenic risk by consuming the green leafy vegetables and herbs is a source of concern.


Assuntos
Exposição Dietética , Chumbo/análise , Mercúrio/análise , Verduras/química , Adolescente , Adulto , Calibragem , Carcinógenos , Feminino , Contaminação de Alimentos/análise , Humanos , Irã (Geográfico) , Limite de Detecção , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Medição de Risco , População Rural , Poluentes do Solo/análise , Análise Espectral/métodos , População Urbana , Poluentes Químicos da Água/análise , Adulto Jovem
15.
Chin Med ; 13: 19, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29686726

RESUMO

BACKGROUND: Cordyceps sinensis, one of the most valued traditional herbal medicines in China, contains high amount of arsenic. Considering the adverse health effects of arsenic, this is of particular concern. The aim of this study was to determine and analyze arsenic speciation in C. sinensis, and to measure the associated human health risks. METHODS: We used microwave extraction and high-performance liquid chromatography coupled with inductively coupled plasma mass spectrometry to determine and analyze the arsenic content in C. sinensis, and measured the associated human health risks according to the hazard index (HI), lifetime cancer risk (CR), and target hazard quotient (THQ). RESULTS: The main arsenic speciation in C. sinensis were not the four organic arsenic compounds, including dimethyl arsenic, monomethyl arsenic, arsenobetaine, and arsenocholine, but comprised inorganic arsenic and other unknown risk arsenic compounds. HI scores indicated that the risk of C. sinensis was acceptable. CR results suggested that the cancer risk was greater than the acceptable lifetime risk of 10-5, even at low exposure levels. THQ results indicated that at the exposure level < 2.0 months/year, the arsenic was not likely to harm human health during a lifetime; however, if the exposure rate was > 3.0 months/year, the systemic effects of the arsenic in C. sinensis was of great concern. CONCLUSION: The arsenic in C. sinensis might not be free of risks. The suggested C. sinensis consumption rate of 2.0 months/year provided important insights into the ways by which to minimize potential health risks. Our study not only played the role of "cast a brick to attract jade" by which to analyze arsenic speciation in C. sinensis but also offered a promising strategy of risk assessment for harmful residues in traditional herbal medicines.

16.
Environ Sci Pollut Res Int ; 24(17): 14605-14615, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28452031

RESUMO

There is global concern about heavy metal contamination in the environment. Adverse health effects can be caused by heavy metals in contaminated food and water. Therefore, environmental monitoring studies and risk assessments should be conducted periodically. In this study, we measured levels of Cd, Cr, Cu, Hg, Mn, Ni, Pb, and Zn in blood cockles (Anadara granosa) collected from three locations in the Upper Gulf of Thailand. Hazard quotients and hazard indices were calculated to evaluate the health risks posed by heavy metals in consumed blood cockles. Heavy metal concentrations in all of the blood cockle samples were lower than the relevant food standards. The hazard quotients and hazard indices were <1 in all three sampling areas, indicating that adverse health effects were not likely to be caused by exposure to heavy metals in blood cockles over a human lifetime.


Assuntos
Arcidae , Contaminação de Alimentos , Metais Pesados/toxicidade , Medição de Risco , Poluentes Químicos da Água/toxicidade , Animais , Cardiidae , Monitoramento Ambiental , Humanos , Metais Pesados/análise , Alimentos Marinhos , Tailândia , Poluentes Químicos da Água/análise
17.
Springerplus ; 5(1): 1697, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27757369

RESUMO

Heavy metals are known to cause deleterious effects on human health through food chain. Human health risks were evaluated from consumption of heavy metal contaminated fish from Buriganga River in Bangladesh. Whole body of five fish species (Puntius ticto, Puntius sophore, Puntius chola, Labeo rohita and Glossogobius giuris) were analyzed which contained various concentrations of Cd, As, Pb, Cr, Ni, Zn, Se, Cu, Mo, Mn, Sb, Ba, V and Ag. Concentrations of Mn, Zn, Se and Pb in all fish species were above the Food Safety Guideline (FSG) by WHO/FAO. Assessment of noncarcinogenic health hazard by target hazard quotient (THQ) indicated no concern from consumption of these fish except for Mn. However, all metals together may affect human health as revealed by hazard index (HI). The target cancer risk (TR) values suggested carcinogenic risk from Ni and As. Taken together it can be concluded that there is potential human health risk in consuming fish from river Buriganga.

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