Nguyen Manh Ha, Hoang Quoc Anh, Nguyen Lan Anh, Ta Thi Thao, Pham Tien Duc, Tu Minh Binh, Chu Dinh Binh
Faculty of Chemistry, VNU University of Science, Vietnam National University, 19 Le Thanh Tong, Hoan Kiem, Hanoi 100000, Vietnam.
School of Chemical Engineering, Hanoi University of Science and Technology, 1 Dai Co Viet, Hai Ba Trung, Hanoi 100000, Vietnam.
Int J Anal Chem. 2019 Dec 21;2019:5037532. doi: 10.1155/2019/5037532. eCollection 2019.
Concentrations of As and other trace elements were measured in groundwater, rice, hair, urine, and blood samples of people consuming As-contaminated groundwater in a village of Ha Nam province, northern Vietnam to understand the recent status of contamination and assess the possible risks of human exposure. Elevated concentrations of As in groundwater were still observed, exceeding the WHO guideline value in most of the tube wells investigated. Significant positive correlations between As concentrations in groundwater and human samples (hair and urine) were observed. Arsenic concentrations in human and hair appeared to be related to the groundwater usage habit, with higher levels found in drinking group than those in the washing group. Significant good correlations were also encountered between cumulative intakes of As, Mn, and Ba through groundwater consumption and hair concentrations. All these results indicate the chronic exposure to As and some other elements such as Mn and Ba. The total intakes of As, Mn, and Ba through rice and groundwater consumption were estimated to be ranged from 80-836, 49.3-1850, and 311-97100 g/day, respectively. The daily intakes of As of the study area ranged from 1.6-16.7 g/kg body wt./day, mean: 7.15 g/kg body wt./day, in which about 85% of the subjects were above the provisional tolerable daily intake proposed by WHO.
对越南北部河南省一个村庄饮用受砷污染地下水的人群的地下水、大米、头发、尿液和血液样本中的砷及其他微量元素浓度进行了测量，以了解近期的污染状况并评估人体暴露的潜在风险。仍观察到地下水中砷浓度升高，在所调查的大多数管井中超过了世界卫生组织的指导值。观察到地下水中砷浓度与人体样本（头发和尿液）之间存在显著正相关。人体和头发中的砷浓度似乎与地下水使用习惯有关，饮用组的水平高于洗涤组。通过饮用地下水摄入的砷、锰和钡的累积量与头发浓度之间也存在显著的良好相关性。所有这些结果表明存在砷以及锰和钡等其他元素的慢性暴露。通过大米和地下水摄入的砷、锰和钡的总量估计分别为80 - 836、49.3 - 1850和311 - 97100微克/天。研究区域的砷日摄入量为1.6 - 16.7微克/千克体重/天，平均为7.15微克/千克体重/天，其中约85%的受试者超过了世界卫生组织提出的暂定每日耐受摄入量。
