文档介绍：directory
IThe nature of arsenic
2arsenic in the soil
3Arsenic contamination in soil remediation tech no logies
4summary
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• In 2010, the medical journal the Iancet reported that 77 million people in Ban gladesh at risk because of drin king water contaminated with arsenic. Over the past decade, researchers in Bangladesh's capital dhaka Araihazar area of nearly 12000 people of tracking survey found that more than 20% of the deaths appear to have been caused by arsenic contamination of Wells・ It is estimated that due to the misleading in the 1970 s a disastrous campaign, has a population of 35 million to 77 million in Bangladesh has gradually affected by arsenic pollution of water. At the time, to provide the villagers with clean sterile water, excavation for millions of tube Wells in the region. Inadvertent agents into the soil at the bottom of many Wells, and n aturally occurring arse nic con tent in soil is very high・
• Naturally occurring soil containing high concentrations of arse nic, rarely, gen erally is about 6 mg per kilogram of arsenic in soil・ Contaminated soil of arsenic from arsenic pesticide use, mine and factory emissions of wastewater containing arsenic and arsenic from the coal, smelting of flyash landing. J. s. Jones et al. Analysis of the orchard soil and spraying of arsenic acid lead arsenic to 18 ~ 144 PPM, without spraying for 3 ~ 14 PPM. Cattle died of ate this pesticide spraying crops of accident happened many times・ Arsenic can accumulate in soil and thus into the crop organization, produce the lowest con