RESUMEN
In order to investigate the composition and diversity of groundwater bacterial communities in typical industrial areas in Shanghai, the Illumina MiSeq high-throughput technology was adopted to explore the correlation and response mechanism of groundwater bacterial communities and environmental factors in typical industries, combined with the analysis of groundwater tri-nitrogen, heavy metals, organic matter, and other indicators. The results showed that the ammonia nitrogen in the groundwater of the petrochemical industry was 64.49%, 32.46%, and 113.91% higher than that of the textile industry, metal products industry, and other industries (P<0.05), respectively. The main detectable indicators of organic matter were total petroleum hydrocarbons (TPH) and volatile phenol. The mass concentration of volatile phenol in groundwater of the petrochemical industry was significantly higher than that of the textile industry, metal products industry, and other industries (P<0.05). The mass concentration of arsenic in the metal products industry was 49.26% and 50.59% higher than that in the petrochemical industry and other industries (P<0.05), respectively. Chloride, manganese, sulfate, etc., were significantly different in different industries (P<0.05). The Shannon index of groundwater in the textile industry was the highest at 3.14, whereas the Shannon index and Ace index of the groundwater in the metal products industry were as low as at 2.42 and 960.46, respectively. The dominant bacterial phylum in groundwater in the industrial area was Proteobacteria, accounting for 80.05%-86.18%. Arsenic, mercury, TPH, etc. were the main influencing factors in groundwater in industrial areas, whereas the nitrifying bacteria, denitrifying bacteria, and organic matter-degrading bacteria were mostly related to groundwater environmental factors. The results of this study can provide theoretical support for groundwater pollution risk management and microbial remediation in petrochemical and metal product industrial areas.
Asunto(s)
Arsénico , Agua Subterránea , Petróleo , China , Bacterias/genética , Nitrógeno , Fenol , FenolesRESUMEN
In order to study the distribution characteristics and potential risk of antimony (Sb) in urban soil, the concentrations of soil Sb in four different land use types were analyzed based on the data of 1670 soil samples with different vertical profiles in 102 plots in Shanghai. The risks were evaluated using the potential ecological risk index method and health risk assessment model. The results showed that the average ω(Sb) in the study area was 0.52 mg·kg-1, and the content of soil Sb gradually declined with the rise in soil profile depth. Sb was enriched in surface soil, which indicated that human activities had caused disturbance to the distribution of Sb in the soil. The content of Sb in the surface soil of industrial land was higher than that of residential land and commercial land, and the content of Sb in agricultural land was the lowest. The single-factor pollution index of industrial land was the highest, reaching a slight pollution level, whereas the residential land, commercial land, and agricultural land were at even-clean or clean levels, respectively. The whole region showed slight ecological risk, with the potential ecological risk index ranging from 4.23 to 7.61. The potential ecological risk level of industrial land was moderate, which needs to be addressed. The results of health risk assessment showed that the non-carcinogenic risk of Sb in the soil was low; however, it is of great concern to residents, especially children, when on residential land.
Asunto(s)
Metales Pesados , Contaminantes del Suelo , Antimonio , Niño , China , Monitoreo del Ambiente/métodos , Humanos , Metales Pesados/análisis , Medición de Riesgo , Suelo , Contaminantes del Suelo/análisisRESUMEN
OBJECTIVE: To detect the expression level of cyclooxygenase-1ï¼COX-1ï¼ and cyclooxygenase-2ï¼COX-2ï¼ in the platelet of iron deficiency anemiaï¼IDAï¼women at childbearing age and to explore its correlation with the different indexes of anemia and platelets. METHODS: Forty female IDA patients at childbearing age and 35 healthy controls were enrolled in this study. The Flow cytometry was used to detect the expression of platelet COX-1 and COX-2ï¼the platelet aggregation function as examined by turbidimetric methodï¼and the levels of serum ferritin were analyzed by electrochemical luminescence methodï¼the leval of serum iron was determined by ELISAï¼and the correlation of different indexes was analyzed. RESULTS: Compared with healthy controlsï¼the levels of platelet COX-1 and COX-2 were significantly lower in female IDA patients at Childbearing ageï¼P<0.05ï¼ï¼but platelet countï¼Pltï¼ï¼mean platelet volumeï¼MPVï¼ and platelet aggregation rateï¼PAgTï¼were not statistically different between the 2 groupsï¼P > 0.05ï¼. The expression level of platelet COX-1 positively correlated with those of Hbï¼r =0.623ï¼P<0.01ï¼ï¼serum ironï¼r =0.321ï¼P<0.05ï¼ and HCTï¼r=0.305ï¼P<0.05ï¼. but the platelet COX-2 expression did not corelate with these indexs. CONCLUSION: The expression of platelet COX-1 and COX-2 in female IDA patients at Childbearing age markedly decreaseï¼and the expression level of platelet COX-1 closely relates with the severity of anemiaï¼that possesses reference value for clinical diagnosis of female IDA patients at Childbearing age..