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本帖最后由 细胞海洋 于 2013-8-27 11:14 编辑 4 S9 ^5 \/ F8 N+ t
, e" i% s# F& ]% rCOVER Partial view of the predictive map of high levels of arsenic in groundwater resources in China (blue, low probability; red, high probability; width, 600 kilometers; resolution, 1 square kilometer). Chronic arsenic poisoning from contaminated groundwater is a major health problem in many parts of China. An estimated 19.6 million people are potentially exposed to elevated arsenic concentrations in their drinking water. See pages 852 and 866. Image: Luis Rodríguez-Lado and Michael Berg, Eawag 1 [% Q0 {& g* z- E" N
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发表于 2013-8-26 12:19
发表于 2013-8-27 14:35
