The Experts below are selected from a list of 10428 Experts worldwide ranked by ideXlab platform
Mike Birkhead - One of the best experts on this subject based on the ideXlab platform.
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Lead Levels in the blood of Mute swans Cygnus olor on the River thames
Journal of Zoology, 2009Co-Authors: Mike BirkheadAbstract:In this paper blood lead Levels in three categories of Mute swan are examined, (i) flock birds (ii) breeding birds and (iii) cygnets. From these regional, seasonal and sex variation for both 1980 and 1981 was examined. In addition a portable haematofluorometer was assessed to determine its possible use as an alternative to atomic absorption and spectrophotometry for determining a measure of lead exposure. Very few swans on the River Thames had blood lead Levels below the Maximum Acceptable Level of 40 mgg/100 ml. In general lead Levels increased with proximity to London and the swans on the tributaries consistently had the lowest Levels which were always below the Maximum Acceptable Level. Blood lead Levels in flock birds were shown to be highest during the coarse fishing season and it was only during the close season that Levels dropped to around 40 mg/1OO ml. Breeding females had significantly higher lead Levels than males and females with lead Levels in excess of 200 mg/1OO ml seemed to have a poor chance of producing cygnets or surviving to the next breeding season. Cygnet mortality was significantly higher on the lower Thames where blood lead Levels were also known to be at their highest.
Yihui Dong - One of the best experts on this subject based on the ideXlab platform.
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health risk assessment of heavy metals in surface water near a uranium tailing pond in jiangxi province south china
Sustainability, 2018Co-Authors: Bai Gao, Xin Luo, Jimmy Jiao, Huanhuan Qin, Chunyan Zhang, Yihui DongAbstract:This study was performed in the Linshui River Watershed to explore the contents of heavy metals in river water, their species, and health risks. The test results show that the contents of arsenic (As), chromium (Cr), copper (Cu), uranium (U), and thorium (Th) are relatively low and below the limit of class III of the environmental quality standards for surface water. According to the analysis through PHREEQC (version 2.18), the main species of As, Cr, Cu, U, and Th are H2AsO4− and HAsO42−, HCrO4−, Cr2O72− and CrO42−, Cu2+, CuSO4 and CuCO3, UO2CO3, (UO2)2CO3(OH)3−, and UO2(CO3)22−, Th(OH)4, Th(OH)22+, and Th(OH)3+, respectively. Health risk assessment demonstrates that the average total risk value is 5.68 × 10−5 year−1, which is higher than the Maximum Acceptable Level of 5.05 × 10−5 year−1 recommended by International Commission on Radiological Protection (ICRP). Moreover, the average of total radionuclide risk (U and Th) is calculated to be 7.85 × 10−9 year−1, which is five orders of magnitude lower than the standard value of 5.0 × 10−4 year−1. The health risk of chemical non-carcinogenic (Cu) is lower than that of chemical carcinogenic (As and Cr). Human health risk values descend in the order of Cr, As, U, Th, and Cu. Therefore, As and Cr in the study area are labeled as the priority pollutants.
Bai Gao - One of the best experts on this subject based on the ideXlab platform.
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Health Risk Assessment of Heavy Metals in Surface Water of the Lhasa River, China
'EDP Sciences', 2019Co-Authors: Bai Gao, Huanhuan Qin, Junping Liu, Xiaoyan Ding, Dhawan Sanjay, Andre DongAbstract:This study was performed in Lhasa River Watershed to explore the contents of heavy metals in river water and assess the health risks. The test results show that the contents of arsenic (As), chromium (Cr) and uranium (U) are relatively low, reaching the Class III of the "Environmental quality standards for surface water (GB3838-2002)". Health risk assessment demonstrates that the average total risk value is 1.79×10-5 yr-1, which is lower than the Maximum Acceptable Level of 5.05×10-5 yr-1 recommended by USEPA. Moreover, the average value of radionuclide risk (U) is calculated to be 9.47×10-9 yr-1, which is five orders of magnitude lower than the standard value of 5.0×10-4 yr-1. Therefore, the river water in the study area causes no significant health risk to people
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health risk assessment of heavy metals in surface water near a uranium tailing pond in jiangxi province south china
Sustainability, 2018Co-Authors: Bai Gao, Xin Luo, Jimmy Jiao, Huanhuan Qin, Chunyan Zhang, Yihui DongAbstract:This study was performed in the Linshui River Watershed to explore the contents of heavy metals in river water, their species, and health risks. The test results show that the contents of arsenic (As), chromium (Cr), copper (Cu), uranium (U), and thorium (Th) are relatively low and below the limit of class III of the environmental quality standards for surface water. According to the analysis through PHREEQC (version 2.18), the main species of As, Cr, Cu, U, and Th are H2AsO4− and HAsO42−, HCrO4−, Cr2O72− and CrO42−, Cu2+, CuSO4 and CuCO3, UO2CO3, (UO2)2CO3(OH)3−, and UO2(CO3)22−, Th(OH)4, Th(OH)22+, and Th(OH)3+, respectively. Health risk assessment demonstrates that the average total risk value is 5.68 × 10−5 year−1, which is higher than the Maximum Acceptable Level of 5.05 × 10−5 year−1 recommended by International Commission on Radiological Protection (ICRP). Moreover, the average of total radionuclide risk (U and Th) is calculated to be 7.85 × 10−9 year−1, which is five orders of magnitude lower than the standard value of 5.0 × 10−4 year−1. The health risk of chemical non-carcinogenic (Cu) is lower than that of chemical carcinogenic (As and Cr). Human health risk values descend in the order of Cr, As, U, Th, and Cu. Therefore, As and Cr in the study area are labeled as the priority pollutants.
Fusheng Wei - One of the best experts on this subject based on the ideXlab platform.
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health risks of children s cumulative and aggregative exposure to metals and metalloids in a typical urban environment in china
Chemosphere, 2016Co-Authors: Suzhe Cao, Xiuge Zhao, Xiaoli Dua, Yiting Che, Eibei Wang, Inghui Zheng, Fusheng WeiAbstract:Abstract Rapid development of industrialization and urbanization results in serious environmental contamination by metal(loid)s, which would consequently cause deleterious health effects to the exposed people through multi-pathways. Therefore, total health risk assessment for the population in urban environment is very important. Unfortunately, few studies to date investigate the cumulative health risks of metal(loid)s through aggregative pathways in Children who are often susceptible population. 12 metal(loid)s including Lead(Pb), Cadmium(Cd), Arsenic(As), Chromium(Cr), Zinc(Zn), Copper(Cu), Nickel(Ni), Manganese(Mn), Cobalt(Co), Selenium(Se), Antimony(Se) and Vanadium(V), were analyzed in PM 10 , drinking water, food, soil and indoor dust in this study. The cumulative and aggregative risks of these metal(loid)s among the local children were then evaluated on a field sampling and questionnaire-survey basis. The results showed that the environments were heavily polluted by metal(loid)s. For most metal(loid)s, food ingestion accounted for more than 80% of the total daily exposure dose. The non-cancer risks were up to 30 times higher than the Acceptable Level due to the food ingestion via Pb, Cr, Cu, Zn, As, Se, Cd and Sb, and the PM 10 inhalation via Cr and Mn. While, the cancer risks were mainly attributed to Cr via food ingestion and As via food and dust ingestion, and approximately 100 times of the Maximum Acceptable Level of 1.0 × 10 −4 . The study highlights the cumulative and aggregative exposure assessment, instead of pollutant investigation to evaluate the potential health risks and emphasizes concerns to improve indoor hygienic and environmental quality and to decrease the potential harmful health effects of children living in urban area.
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health risk assessment of various metal loid s via multiple exposure pathways on children living near a typical lead acid battery plant china
Environmental Pollution, 2015Co-Authors: Suzhen Cao, Xiaoli Duan, Xiuge Zhao, Beibei Wang, Delong Fan, Chengye Sun, Fusheng Wei, Guibin JiangAbstract:Manufacture of lead-acid batteries is of widespread interest because of its emissions of heavy metals and metalloids into environment, harming environmental quality and consequently causing detrimental effects on human health. In this study, exposure pathways and health risks of children to heavy metal(loid)s (Pb, Cd, As, etc) were investigated based on field sampling and questionnaire. Pb was one of the most abundant elements in children's blood, with an elevated blood lead Level of 12.45 μg dL(-1). Soil/dust and food were heavily polluted by targeted metal(loid)s. Food ingestion accounted for more than 80% of the total exposure for most metal(loid)s. The non-cancer risks to children were 3-10 times higher than the Acceptable Level of 1, while the cancer risks were 5-200 times higher than the Maximum Acceptable Level of 1.0 × 10(-4). The study emphasized the significance of effective environmental management, particularly to ensure food security near battery facilities.
Hui Qian - One of the best experts on this subject based on the ideXlab platform.
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origin and assessment of groundwater pollution and associated health risk a case study in an industrial park northwest china
Environmental Geochemistry and Health, 2014Co-Authors: Peiyue Li, Jianhua Wu, Hui QianAbstract:Groundwater quality which relates closely to human health has become as important as its quantity due to the demand for safe water. In the present study, an entropy-weighted fuzzy water quality index (WQI) has been proposed for performing groundwater quality assessment in and around an industrial park, northwest China, where domestic water requirements are solely met by groundwater. The human health risk was assessed with the model recommended by the United States Environmental Protection Agency. In addition, the sources of major ions and main contaminants were also analyzed. The study shows that groundwater in the study area has been contaminated conjunctively by natural processes and industrial and agricultural activities. Nitrate, manganese (Mn), fluoride, total dissolved solids, total hardness and sulfate are major contaminants influencing groundwater quality. Nitrate and heavy metals such as Mn are mainly affected by human agricultural activities and industrial production, while other contaminants are mainly originated from mineral weathering and water–rock interactions. The results of water quality assessment suggest that half of the groundwater samples collected are of medium quality thus require pretreatment before human consumption. The mean health risk caused by the consumption of contaminated groundwater in the area is 8.42 × 10−5 per year which surpasses the Maximum Acceptable Level (5 × 10−5 per year) recommended by the International Commission on Radiologic Protection. The entropy-weighted fuzzy WQI proposed in this study can not only assign proper weights to parameters but also treat uncertainties associated with water quality classification. This study will be of interest to international environmentalists and hydrogeologists. It will also be useful in regional groundwater management and protection.