| 摘要: |
| 用连续化学浸提法将施用了不同量氯化汞的盆栽土壤中的汞,按其形态分为水溶态及交换态、酸溶态、碱溶态、元素态、残渣态等五个组分,实验结果表明,氯化汞进入不同类型和质地的土壤后,一半以上转化为残渣态,而水溶态和交换态以及酸溶态的甲基态都很少,其他形态在土壤中也占有一定的比例。在不同的土壤中,各种形态汞的分布有所不同;但对同一种土壤来说,汞的形态分布顺序与施汞量无关。 |
| 关键词: 残渣 总汞 氯化汞 元素 不同类型 酸溶 土壤类型 交换态 形态比较 形态分布 |
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| THE STUDY ON CHEMICAL FORMS OF MERCURY IN SOILS |
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| Abstract: |
| A sequential extraction procedure was used to fractionate mercury in mercuric chloride treated soils into the designated forms of water solu- ble,exchangeable,acid-soluble,alkli-soluble,elemental and residual. Samples were obtained from soil pot studies with different soils,in whi- ch mercuric chloride was mixed in different levels.It shows that more than half of mercuric chloride added changed into residual form.Water soluble,exchangeable and methylated forms are less than 0.5%.It has been noted that distr... |
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