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首页> 外文期刊>Environmental Protection and Natural Resources >Influence of pH on the solubility of arsenic in heavily contaminated soils / Wp?yw pH na rozpuszczalno?? arsenu w glebach silnie zanieczyszczonych
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Influence of pH on the solubility of arsenic in heavily contaminated soils / Wp?yw pH na rozpuszczalno?? arsenu w glebach silnie zanieczyszczonych

机译：pH对重污染土壤中砷溶解度的影响/ pH na溶解度的影响重度污染土壤中的砷

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摘要

The aim of this study was to determine the impact of pH on arsenic solubility in soils heavily contaminated by the former arsenic industry. For the purpose of the study, three soil samples were collected from the area affected by ore processing in Z?oty Stok. Soils differed in initial pH, calcium carbonate content, organic matter content and total arsenic concentration. The amounts of arsenic released from soils at various pH were measured using extraction tests, where soil samples were shaken with various doses of HCl and NaOH in the presence of 0.01 mol ? dm?3 CaCl2 as the background solution. Arsenic solubility in soils was considerably low at neutral or slightly acidic pH and increased considerably in both strongly acidic and alkaline conditions. The importance of these effects for environmental risk was discussed.
机译：这项研究的目的是确定pH值对被前砷工业严重污染的土壤中砷溶解度的影响。出于研究目的，从Z？oty Stok的矿石加工受影响地区收集了三个土壤样品。土壤的初始pH，碳酸钙含量，有机质含量和总砷浓度不同。使用萃取试验测量在各种pH值下从土壤中释放出的砷量，其中在0.01 mol？N的存在下，将土壤样品与各种剂量的HCl和NaOH一起摇动。 dm ？3 CaCl 2 作为背景溶液。砷在土壤中的溶解度在中性或弱酸性pH值下非常低，而在强酸性和碱性条件下都大大增加。讨论了这些影响对环境风险的重要性。

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