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Health Effects Of Exposure To Natural Arsenic In Groundwater And Coal In China: An Overview Of Occurrence, Guangqian Yu, Dianjun Sun, Yan Zheng
Health Effects Of Exposure To Natural Arsenic In Groundwater And Coal In China: An Overview Of Occurrence, Guangqian Yu, Dianjun Sun, Yan Zheng
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Between 2001 and 2005, 21,155 of 445,638 wells in 20,517 villages in 292 counties in 16 provinces from China, or 5% of wells, were found to contain > 50 μg/L arsenic (As) by field testing with the Merck As kit. We achieved quality assurance of analysis of at least 10% of the wells containing > 50 μg/L As using hydride generation atomic fluorescence spectrometry and silver dithiodicarbomate spectrometry. Our best estimate of the population exposed to > 50 μg/L As in drinking water was 582,769. This is probably an underestimate for China because of the limited area surveyed. In a survey of 135,492 …