不同磷酸盐对铜和锌在红壤中吸附和淋溶的影响（英文）

发布时间：2018-01-25 15:58

  本文关键词： 铜 锌 磷酸盐 吸附 淋溶 红壤　出处：《Transactions of Nonferrous Metals Society of China》2016年02期 　论文类型：期刊论文

【摘要】：采用批式吸附实验和土柱实验研究KH_2PO_4、(NH_4)H_2PO_4和Ca(H_2PO_4)_2对铜和锌在红壤中的吸附和淋溶特性。结果表明:这3种磷酸盐都能极大地提高红壤对铜和锌的吸附能力,其影响大小顺序为Ca(H_2PO_4)_2KH_2PO_4(NH4)H_2PO_4。磷酸盐的添加对铜的迁移性影响不大。Ca(H_2PO_4)_2和(NH_4)H_2PO_4能较大地提高锌在红壤中的移动性。3种磷酸盐都能促进铜和锌的形态由非残渣态向残渣态转化,但是同样会增加其可交换态和碳酸盐结合态的含量。
[Abstract]:Batch adsorption experiment and soil column experiment were used to study KH_2PO_4. H2PO4 and CaH2PO4). The adsorption and leaching characteristics of copper and zinc in red soil were studied. The results showed that the adsorption capacity of copper and zinc on red soil could be greatly improved by these three phosphate. The order of influence is CaH2PO4, 2KH2PO4, 2KH2PO4, H2PO4. The addition of phosphate has little effect on the mobility of copper. CaH2PO4). The mobility of zinc in red soil can be greatly improved by the addition of S _ 2 and NH _ 4H _ 2PO _ 4. 3 phosphate can promote the transformation of copper and zinc from non-residuals to residuals. But it also increases the content of exchangeable and carbonate bound states.
【作者单位】： 湖南大学环境科学与工程学院;湖南大学环境生物与控制教育部重点实验室;长江科学院水土保持研究所;西南民族大学旅游与历史文化学院;
【基金】：Project(41271294)supported by the National Natural Science Foundation of China Project(NCET-09-330)supported by Program for New Century Excellent Talents in University,China
【分类号】：X131.3
【正文快照】： 1 Introduction In the past decades, heavy metal pollution has been considered as one of the most environment concern around the world and received more and more attention.Anthropogenic industrial and agriculture activities including sewage discharge, st，

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