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首页> 外文会议>The Fifth International Symposium on Southeast Asian Water Environment(Oral Presentation Proceedings) >Health Risks Due to Contamination of Groundwater with Heavy Metals and Pathogenic Microorganisms at an Arsenic-Affected Village inCambodia
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Health Risks Due to Contamination of Groundwater with Heavy Metals and Pathogenic Microorganisms at an Arsenic-Affected Village inCambodia

机译：柬埔寨一个受砷影响的村庄因重金属和致病微生物污染地下水而造成健康风险

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At a village where an outbreak of suspected arseniasis occurred in Cambodia, we investigated the contamination of groundwater, rainwater and river water with heavy metals and fecal indicator bacteria. We also evaluated health risks due to the contaminated water and verified the risks by analyzing hair and blood samples collected from villagers. As the result, arsenic was detected from all tube (deep) wells at concentrations higher than the WHO guideline value. Manganese and lead were also detected frequently in the groundwater at concentration higher than the guideline values as well. While health risk caused by manganese was negligible, the arsenic contamination of groundwater brought considerable health risks to villagers. Actually the arsenic concentration in hair samples of 96.3 % of villagers exceeded the criteria for skin pathology. As for fecal contamination, although Escherichia coli was sometimes detected from groundwater from tube wells, its concentration was lower than those in groundwater from dug (shallow) wells, rainwater and river water. This indicates that the risk of diarrhea at this village probably has been reduced since the construction of tube wells. However the drastic reduction was not found in seroprevalences against Helicobactor pylori and adenovirus among young children as risk indicators of diarrhea.
机译：在一个柬埔寨发生疑似砷病暴发的村庄，我们调查了重金属和粪便指示细菌对地下水，雨水和河水的污染。我们还评估了水污染造成的健康风险，并通过分析从村民那里收集的头发和血液样本验证了这些风险。结果，从所有试管（深）孔中检出的砷浓度都高于WHO准则值。地下水中锰和铅的含量也经常高于指导值。尽管由锰引起的健康风险可以忽略不计，但是地下水的砷污染给村民带来了相当大的健康风险。实际上，96.3％的村民头发样本中的砷浓度超过了皮肤病理学的标准。至于粪便污染，尽管有时从试管井的地下水中检出大肠杆菌，但其浓度低于挖浅井，雨水和河水的地下水浓度。这表明自从修建管井以来，该村的腹泻风险可能已降低。然而，未发现幼儿中针对幽门螺杆菌和腺病毒的血清阳性率急剧下降，这是腹泻的危险指标。

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