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1.
Chemosphere ; 272: 129877, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33592507

RESUMO

This study evaluates the component additive approach for Eu adsorption on mixtures of smectite and illite, which are the most common clays used as barriers for contaminant retention in waste repositories. A thorough set of Eu adsorption data for Na-exchanged smectite and illite that encompasses a wide range of pH values, ionic strengths, and Eu concentrations was provided. This database is likely one of the largest sorption databases available for Eu in 2:1 clays, making it appropriate for sorption model calibration. The main adsorption mechanisms considered were surface complexation, on weak and strong clay edge sites, and cation exchange. Further, the role of principal ions, which are naturally leached from clays, as competitive factors for Eu retention, was evaluated in the modelling calculations. The main uncertainties related to the modelling procedures and the use of different thermodynamic data on sorption modelling were outlined. The reactions and parameters successful in modelling Eu adsorption on individual clays were used without any modification to model Eu adsorption on illite/smectite mixtures, wherein only the relative mineral proportions were considered. The fit of the sorption data in the mixed clay system was satisfactory, indicating that, in 2:1 clays, Eu sorption is an additive process, which stresses the predictive capacity of the component additive approach in these systems. This is an important support for assessing the performance of barrier materials for contaminant migration under different geochemical conditions.


Assuntos
Silicatos de Alumínio , Európio , Adsorção , Cátions , Argila , Termodinâmica
3.
Pediatr. aten. prim ; 22(88): 399-402, oct.-dic. 2020. ilus
Artigo em Espanhol | IBECS-Express | IBECS | ID: ibc-FGT-6176

RESUMO

La deformidad de Madelung es una entidad infrecuente producida por un trastorno del crecimiento de la porción anteromedial de la placa de crecimiento epifisiaria distal del radio. Puede aparecer de forma aislada o en el contexto de enfermedades sindrómicas. Dicho trastorno provoca una alteración en la anatomía de la articulación de la muñeca, que deriva en una deformidad visible de la misma que se instaura de manera progresiva, limitando la movilidad de la articulación y provocando en ocasiones dolor local. La radiografía del antebrazo distal es diagnóstica objetivándose curvatura radial, desplazamiento dorsal del cúbito distal y palmar del carpo. Presentamos el caso de una adolescente que acudió a urgencias por deformidad de la muñeca no asociada a traumatismo


Madelung deformity is an uncommon pathology caused by a growth disorder of the anteromedial part of the distal radius growth plate. It can occurs in isolate or in the context of some syndromes. This growth disorder leads to a disturbance in the anatomy of the wrist joint which drifts into its obvious deformity, which is set progressively restricting wrist's motion and sometimes inducing local pain. Distal forearm's X-ray gives the diagnosis showing radius bowing, posterior projection of the ulnar head and anterior projection of the carpus. We present the case of an adolescent woman who came to our Emergency Department for nontraumatic wrist joint deformity

4.
Artigo em Inglês | MEDLINE | ID: mdl-33179265

RESUMO

INTRODUCTION: We aimed to give a global overview of trends in access to sexual and reproductive health and rights (SRHR) during the coronavirus disease 2019 (COVID-19) pandemic and what is being done to mitigate its impact. MATERIAL AND METHODS: We performed a descriptive analysis and content analysis based on an online survey among clinicians, researchers, and organizations. Our data were extracted from multiple-choice questions on access to SRHR services and risk of SRHR violations, and written responses to open-ended questions on threats to access and required response. RESULTS: The survey was answered by 51 people representing 29 countries. Eighty-six percent reported that access to contraceptive services was less or much less because of COVID-19, corresponding figures for surgical and medical abortion were 62% and 46%. The increased risk of gender-based and sexual violence was assessed as moderate or severe by 79%. Among countries with mildly restrictive abortion policies, 69% had implemented changes to facilitate access to abortion during the pandemic, compared with none among countries with severe restrictions (P < .001), 87.5% compared with 46% had implemented changes to facilitate access to contraception (P = .023). The content analysis showed that (a) prioritizations in health service delivery at the expense of SRHR, (b) lack of political will, (c) the detrimental effect of lockdown, and (d) the suspension of sexual education, were threats to SRHR access (theme 1). Requirements to mitigate these threats (theme 2) were (a) political will and support of universal access to SRH services, (b) the sensitization of providers, (c) free public transport, and (d) physical protective equipment. A contrasting third theme was the state of exception of the COVID-19 pandemic as a window of opportunity to push forward women's health and rights. CONCLUSIONS: Many countries have seen decreased access to and increased violations of SRHR during the COVID-19 pandemic. Countries with severe restrictions on abortion seem less likely to have implemented changes to SRHR delivery to mitigate this impact. Political will to support the advancement of SRHR is often lacking, which is fundamental to ensuring both continued access and, in a minority of cases, the solidification of gains made to SRHR during the pandemic.

5.
An. pediatr. (2003. Ed. impr.) ; 93(5): 313-322, nov. 2020.
Artigo em Espanhol | IBECS | ID: ibc-192557

RESUMO

INTRODUCCIÓN: SARS-CoV-2, responsable de la enfermedad por coronavirus 2019 (COVID-19), fue detectado por primera vez en España el 31 de enero de 2020. El 14 de marzo fue declarado el estado de alarma con el objetivo de controlar la pandemia. El objetivo de este estudio es analizar las consecuencias de esta crisis sanitaria sobre el patrón de demanda asistencial, así como el manejo y las características de los pacientes con sospecha de COVID-19 en el Servicio de Urgencias Pediátricas. PACIENTES Y MÉTODOS: Estudio retrospectivo observacional en niños y adolescentes menores de 18 años, atendidos en nuestro Servicio de Urgencias Pediátricas durante el periodo comprendido desde el 14 de marzo hasta el 17 de abril de 2020. RESULTADOS: Durante el periodo de estudio se atendieron 1.666 pacientes, un 65,4% menos que en el mismo periodo de 2019. La edad media fue de 5,4 años y el 51,2% eran varones. El 39,9% fueron clasificados con niveles de alta prioridad, un 6,5% más que en 2019. Los principales motivos de consulta fueron fiebre (26,5%), síntomas respiratorios (16,1%) y traumatismos (15,2%). Un total de 218 pacientes (13%) fueron diagnosticados de posible COVID-19, confirmándose la infección en el 18,4%. El 44% (96/218) fueron diagnosticados de infección respiratoria inferior y el 33,9% (74/218), superior. El 23,8% (52/218) fueron hospitalizados. CONCLUSIONES: Durante el brote epidémico SARS-CoV-2 disminuyó la demanda de asistencia pediátrica urgente, aumentando la proporción de casos con niveles de triaje de alta prioridad. La mayoría de los pacientes con sospecha o confirmación microbiológica de COVID-19 cursaron con clínica respiratoria leve


INTRODUCTION: SARS-CoV-2, coronavirus that causes coronavirus disease 2019 (COVID-19), was first detected in Spain on 31 January 2020. On 14 March 2020, a state of emergency was declared in Spain in a bid to control the spread of the COVID-19 pandemic in the country. The aim of our study is to analyse the impact on emergency medicine attendance after the national lockdown, as well as the clinical presentation and the management of patients with suspected COVID-19 in the Paediatric Emergency Department. PATIENTS AND METHODS: This retrospective observational study included children and adolescents under the age of 18, attended in our Paediatric Emergency Department during the period March 14 to April 17, 2020. RESULTS: A total of 1,666 patients were attended during the study period, 65.4% less than in the same period of 2019. Just over half (51.2%) were males, and mean age was 5.4 years. In triage, 39.9% were high priority levels, 6.5% more than 2019. Most frequent reasons for consultation at the Paediatric Emergency Department were fever (26.5%), respiratory symptoms (16.1%), and trauma (15.2%). A total of 218 patients (13%) received a diagnosis of possible COVID-19, with SARS-CoV-2 infection confirmed in 18.4%, and 23.8% (52/218) were hospitalised. At discharge, 44% (96/218) were diagnosed with lower, and 33.9% (74/218) with upper respiratory infection. CONCLUSIONS: During the SARS-CoV-2 outbreak, the demand for urgent paediatric care decreased, with the proportion of cases with high priority triage levels increasing. Most of the patients with suspected or microbiological confirmation of COVID-19 had mild respiratory symptoms


Assuntos
Humanos , Masculino , Feminino , Recém-Nascido , Lactente , Pré-Escolar , Criança , Adolescente , Infecções por Coronavirus/epidemiologia , Pneumonia Viral/epidemiologia , Pandemias , Prioridades em Saúde , Serviço Hospitalar de Emergência/estatística & dados numéricos , Emergências , Necessidades e Demandas de Serviços de Saúde/estatística & dados numéricos , Triagem/estatística & dados numéricos , Estudos Retrospectivos , Espanha
6.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-33020032

RESUMO

Up to 80% of first-episode psychosis patients suffer a relapse within five years of the remission. Relapse should be an important focus of prevention given the potential harm to the patient and family. It threatens to disrupt their psychosocial recovery, increases the risk of resistance to treatment and has been associated with greater direct and indirect costs for society. Based on a previous project entitled "Genotype-phenotype and environment. Application to a predictive model in first psychotic episodes" (PEPs Project), the project "Clinical and neurobiological determinants of second episodes of schizophrenia. Longitudinal study of first episode of psychosis" was designed, also known as the 2EPs Project. It aimed to identify and characterize those factors that predict a relapse within the years immediately following a first episode. This project has focused on following the clinical course, with neuropsychological assessments, biological and neuroanatomical measures, genetic adherence and physical health monitoring in order to compare a subgroup of patients with a second episode to another group of patients which remains in remission. The main objective of the present article is to describe the rationale of the 2EPs Project, explaining the measurement approach adopted and providing an overview of the selected clinical and functional measures. 2EPs Project is a multicenter, coordinated, naturalistic, longitudinal follow-up study over three years in a Spanish sample of patients in remission after a first-psychotic episode of schizophrenia. It is closely monitoring the clinical course of the cases recruited to compare the subgroup of patients with a second episode to that which remains in remission. The sample is composed of 223 subjects recruited from 15 clinical centres in Spain with experience of the preceding PEPs Study project, albeit 2EPs being an expanded version with new basic groups in biological research. From the total sample recruited, 63 patients presented a relapse (44%). 2EPs arose to characterize first episodes in an exhaustive, novel and multimodal way, thus contributing towards the development of a predictive model of relapse. Identifying the characteristics of patients who relapse could improve early detection and intervention.

7.
An Pediatr (Engl Ed) ; 93(5): 313-322, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33020734

RESUMO

Introduction: SARS-CoV-2, coronavirus that causes coronavirus disease 2019 (COVID-19), was first detected in Spain on 31 January 2020. On 14 March 2020, a state of emergency was declared in Spain in a bid to control the spread of the COVID-19 pandemic in the country. The aim of our study is to analyze the impact on emergency medicine attendance after the national lockdown, as well as the clinical presentation and the management of patients with suspected COVID-19 in the Paediatric Emergency Department. Patients and methods: This retrospective observational study included children and adolescents under the age of 18, attended in our Paediatric Emergency Department during the period March 14 to April 17, 2020. Results: A total of 1666 patients were attended during the study period, 65.4% less than in the same period of 2019. Just over half (51.2%) were males, and mean age was 5.4 years. In triage, 39.9% were high priority levels, 6.5% more than 2019. Most frequent reasons for consultation at the Paediatric Emergency Department were fever (26.5%), respiratory symptoms (16.1%), and trauma (15.2%). A total of 218 patients (13%) received a diagnosis of possible COVID-19, with SARS-CoV-2 infection confirmed in 18.4%, and 23.8% (52/218) were hospitalised. At discharge, 44% (96/218) were diagnosed with lower, and 33.9% (74/218) with upper respiratory infection. Conclusions: During the SARS-CoV-2 outbreak, the demand for urgent paediatric care decreased, with the proportion of cases with high priority triage levels increasing. Most of the patients with suspected or microbiological confirmation of COVID-19 had mild respiratory symptoms.

8.
Pediatr Emerg Care ; 2020 Oct 22.
Artigo em Inglês | MEDLINE | ID: mdl-33105463

RESUMO

We report a case of an uncommon sacrococcygeal anomaly in a healthy girl initially presenting to the emergency department with coccygodynia and a past history of longstanding constipation. The clinical evolution was satisfactory once the bony anomaly was removed (coccygectomy). This unusual case exemplifies the importance of the medical history and physical examination to make an accurate diagnosis. An inadequate intervention may result in persistent pain, worsening longstanding constipation, and psychosocial and medical consequences.

9.
Pediatr. aten. prim ; 22(87): e143-e145, jul.-sept. 2020. ilus
Artigo em Espanhol | IBECS-Express | IBECS | ID: ibc-ET1-6916

RESUMO

El hemotímpano se define como la ocupación de la cavidad del oído medio por sangre. Es un signo característico de las fracturas de la base del cráneo. Los casos secundarios a epistaxis son muy infrecuentes. Es recomendable realizar seguimiento clínico hasta documentar su resolución


Hemotympanum is defined as the occupation of the tympanic cavity of the middle ear by blood. It is a typical sign of skull base fractures. Cases describing secondary hemotympanum owing to epistaxis are very infrequent. Clinical follow-up is recommended until the resolution of hemotympanum

10.
J Clin Med ; 9(8)2020 Aug 03.
Artigo em Inglês | MEDLINE | ID: mdl-32756441

RESUMO

BACKGROUND: Air pollution is increasingly recognized as a risk factor for acute exacerbation of chronic obstructive pulmonary disease (COPD). Changing climate and weather patterns can modify the levels and types of air pollutants. For example, dust outbreaks increase particulate air pollution. OBJECTIVE: This paper examines the effect of Saharan dust storms on the concentration of coarse particulate matter in Miami, and its association with the risk of acute exacerbation of COPD (AECOPD). METHODS: In this prospective cohort study, 296 COPD patients (with 313 events) were followed between 2013 and 2016. We used Light Detection and Ranging (LIDAR) and satellite-based Aerosol Optical Depth (AOD) to identify dust events and quantify particulate matter (PM) exposure, respectively. Exacerbation events were modeled with respect to location- and time-lagged dust and PM exposures, using multivariate logistic regressions. MEASUREMENTS AND MAIN RESULTS: Dust duration and intensity increased yearly during the study period. During dust events, AOD increased by 51% and particulate matter ≤2.5 µm in aerodynamic diameter (PM2.5) increased by 25%. Adjusting for confounders, ambient temperature and local PM2.5 exposure, one-day lagged dust exposure was associated with 4.9 times higher odds of two or more (2+ hereto after) AECOPD events (odds ratio = 4.9; 95% CI = 1.8-13.4; p < 0.001). Ambient temperature exposure also showed a significant association with 2+ and 3+ AECOPD events. The risk of AECOPD lasted up to 15 days after dust exposure, declining from 10× higher on day 0 to 20% higher on day 15. CONCLUSIONS: Saharan dust outbreaks observed in Miami elevate the concentration of PM and increase the risk of AECOPD in COPD patients with recurring exacerbations.

11.
An Pediatr (Barc) ; 93(5): 313-322, 2020 Nov.
Artigo em Espanhol | MEDLINE | ID: mdl-32800720

RESUMO

INTRODUCTION: SARS-CoV-2, coronavirus that causes coronavirus disease 2019 (COVID-19), was first detected in Spain on 31 January 2020. On 14 March 2020, a state of emergency was declared in Spain in a bid to control the spread of the COVID-19 pandemic in the country. The aim of our study is to analyse the impact on emergency medicine attendance after the national lockdown, as well as the clinical presentation and the management of patients with suspected COVID-19 in the Paediatric Emergency Department. PATIENTS AND METHODS: This retrospective observational study included children and adolescents under the age of 18, attended in our Paediatric Emergency Department during the period March 14 to April 17, 2020. RESULTS: A total of 1,666 patients were attended during the study period, 65.4% less than in the same period of 2019. Just over half (51.2%) were males, and mean age was 5.4 years. In triage, 39.9% were high priority levels, 6.5% more than 2019. Most frequent reasons for consultation at the Paediatric Emergency Department were fever (26.5%), respiratory symptoms (16.1%), and trauma (15.2%). A total of 218 patients (13%) received a diagnosis of possible COVID-19, with SARS-CoV-2 infection confirmed in 18.4%, and 23.8% (52/218) were hospitalised. At discharge, 44% (96/218) were diagnosed with lower, and 33.9% (74/218) with upper respiratory infection. CONCLUSIONS: During the SARS-CoV-2 outbreak, the demand for urgent paediatric care decreased, with the proportion of cases with high priority triage levels increasing. Most of the patients with suspected or microbiological confirmation of COVID-19 had mild respiratory symptoms.


Assuntos
Infecções por Coronavirus , Serviço Hospitalar de Emergência/tendências , Utilização de Instalações e Serviços/tendências , Hospitais Pediátricos/tendências , Pandemias , Pneumonia Viral , Adolescente , Betacoronavirus , Criança , Pré-Escolar , Infecções por Coronavirus/diagnóstico , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/terapia , Feminino , Alocação de Recursos para a Atenção à Saúde , Política de Saúde , Humanos , Lactente , Recém-Nascido , Masculino , Pneumonia Viral/diagnóstico , Pneumonia Viral/epidemiologia , Pneumonia Viral/terapia , Estudos Retrospectivos , Espanha/epidemiologia , Triagem
15.
Int J Gynaecol Obstet ; 149(1): 113-119, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32012258

RESUMO

Ensuring universal access to sexual and reproductive healthcare services is Target 3.7 of the United Nations Sustainable Development Goals (SDG). Refugee and migrant women and children are at particular risk of being forgotten in the global momentum to achieve this target. In this article we discuss the violations of sexual and reproductive health and rights (SRHR) of particular relevance to the refugee and migrant reality. We give context-specific examples of denial of health services to vulnerable groups; lack of dignity as a barrier to care; the vulnerability of adolescents; child marriage; weaponized rape; gender-based violence; and sexual trafficking. We discuss rights frameworks and models that are being used in response to these situations, as well as what remains to be done. Specifically, we call for obstetricians and gynecologists to act as individual providers and through their FIGO member societies to protect women's health and rights in these exposed settings.


Assuntos
Refugiados , Saúde Reprodutiva/normas , Direitos Sexuais e Reprodutivos/normas , Migrantes , Adolescente , Adulto , Criança , Feminino , Saúde Global , Ginecologia/normas , Humanos , Cooperação Internacional , Obstetrícia/normas , Saúde Sexual/normas , Desenvolvimento Sustentável , Saúde da Mulher
17.
Rev. psiquiatr. salud ment. (Barc., Ed. impr.) ; 12(4): 232-241, oct.-dic. 2019. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-187021

RESUMO

Introducción: Aunque la relación de los síntomas y las funciones cognitivas con la funcionalidad de pacientes con esquizofrenia es bien conocida, la complejidad de la patología hace necesario el estudio de esta relación por medio de un método más analítico que los enfoques de relaciones simples. Material y métodos: Ciento sesenta y cinco pacientes con esquizofrenia se sometieron a una evaluación clínica (síntomas clínicos, insight, síntomas afectivos y ajuste premórbido). La neurocognición fue representada mediante una estructura de 5 factores obtenida por medio del análisis factorial confirmatorio. La funcionalidad se obtuvo mediante la escala DAS-WHO y la calidad de vida mediante la Escala de Calidad de Vida. Resultados: Utilizando el modelado de ecuaciones estructurales (MEE), específicamente el «measured-variable path analysis», el modelo de mediación formado por la capacidad neurocognitiva, los síntomas clínicos y el funcionamiento premórbido mostró un buen ajuste con los datos observados (Satorra-Bentler χ2=604,83; RMSEA=0,08; SRMR=0,11; NNFI=0,96; CFI=0,97). La velocidad de procesamiento, la memoria verbal y el funcionamiento premórbido predijeron directamente la funcionalidad. La fluidez verbal predijo la funcionalidad de manera directa e indirecta, a través de los síntomas negativos. Las funciones ejecutivas, el insight, los síntomas afectivos y los datos cognitivos adicionales no contribuyeron de manera significativa al modelo. Conclusiones: Los resultados indican que los síntomas negativos y el funcionamiento premórbido predicen directamente la funcionalidad, mientras que los factores cognitivos muestran interacciones más complejas con los síntomas negativos y la funcionalidad. Estos resultados deberían ser considerados para nuevas estrategias de intervención


Introduction: Although it is well-known that several factors such as symptoms and cognition are related with functional outcome in schizophrenia, the complex nature of the disorder makes necessary to study their interaction by means of a more analytic method than simple linkages approaches. Material and methods: One hundred and sixty-five patients with schizophrenia underwent a clinical evaluation (including clinical symptoms, insight, affective symptoms and premorbid adjustment). Neurocognition was represented by a 5-factor structure obtained by confirmatory factor analysis from a neurocognitive battery. The estimation for outcome was obtained throughout the DAS-WHO scale, and quality of life with the Quality of Life Scale. Results: Using structural equation modeling (SEM), specifically measured-variable path analysis, a mediational model consisting of neurocognitive capacity linked to clinical symptoms and premorbid functioning showed good fit to the observed data (Satorra-Bentler χ2=604.83; RMSEA=.08; SRMR=.11; NNFI=.96; CFI=.97). Processing speed, verbal memory and premorbid functioning directly predicted outcome. Verbal fluency predicted outcome both directly and indirectly via negative symptoms. Executive functions, insight, affective symptoms, and additional cognitive data did not significantly contribute to the model. Conclusions: Results suggest that negative symptoms and premorbid functioning directly predict outcome, whereas cognitive factors show more complex interactions with negative symptoms and outcome. These results should be considered for new intervention strategies


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Esquizofrenia/epidemiologia , Psicologia do Esquizofrênico , Cognição/classificação , Transtornos Neurocognitivos/diagnóstico , Previsões/métodos , Avaliação de Sintomas/métodos , Testes de Estado Mental e Demência/estatística & dados numéricos , Análise de Classes Latentes
19.
Acta Derm Venereol ; 99(12): 1078-1084, 2019 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-31453631

RESUMO

The aim of this 12-week randomized, double-blind, placebo-controlled trial was to determine the efficacy and safety of a probiotic mixture in the reduction of psoriasis severity. Ninety 18-70-year-old adults with plaque psoriasis were randomized into probiotic and placebo groups. At 12-week follow-up, 66.7% of patients in the probiotic group and 41.9% in the placebo group showed a reduction in Psoriasis Area and Severity Index of up to 75% (p < 0.05). A clinically relevant difference was observed in Physician Global Assessment index: 48.9% in the probiotic group achieved a score of 0 or 1, compared with 30.2% in the placebo group. The results of follow-up 6 months after the end of the study showed a lower risk of relapse after the intake of the probiotic mixture. Analysis of gut microbiota confirmed the efficacy of the probiotic in modulation of the microbiota composition.


Assuntos
Microbioma Gastrointestinal , Probióticos/administração & dosagem , Psoríase/terapia , Administração Oral , Adolescente , Adulto , Idoso , Método Duplo-Cego , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Probióticos/efeitos adversos , Psoríase/diagnóstico , Psoríase/imunologia , Psoríase/microbiologia , Recidiva , Indução de Remissão , Espanha , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
20.
ACS Omega ; 4(8): 13418-13425, 2019 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-31460470

RESUMO

Contaminant migration is strongly controlled by sorption reactions; thus, the behavior of anions, which are (almost) not sorbing under alkaline conditions, is an issue of environmental concern. This is especially relevant in the frame of low and intermediate-low radioactive waste repositories, where the pH generated by cement-based materials is hyperalkaline. Selenite (SeO3 2-) sorption on calcium silicate hydrate (C-S-H) phases-the main cement sorbing minerals-has been investigated by batch experiments, ζ-potential measurements, and thermodynamic modeling to elucidate retention mechanisms and possible competitive/synergetic effects of cation coadsorption. Selenite sorption was shown to be nonlinear and slightly increasing with the C-S-H Ca/Si ratio; precipitation of CaSeO3(s) was observed for Se concentration higher than 2 × 10-3 M. Indeed, the presence of Ca is essential to enable selenite retention under alkaline conditions. Progressive additions of Na2SeO3 or NaCl salt to the phases produced a change in the C-S-H surface properties, that is, a decrease in the ζ-potential, in apparent agreement with anion adsorption. However, this effect had to be also correlated to Na coadsorption, as Cl showed null retention on the C-S-H phases. At the same time, anion adsorption had a clear effect on the retention of other cations (Ba) in the system. The distribution coefficient of Ba (at trace concentrations) suffered a moderate decrease by the presence of Na+ and Cl-, but it was improved by the presence of Na+ and SeO3 2-, indicating complex competitive/synergetic effects between anions and cations. All of the experimental data were satisfactorily modeled considering a classical double-layer approach.

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