REMOBILIZATIONS OF LEAD, NICKEL AND COPPER FROM ELL-REN RIVER SEDIMENT FRACTIONS AFFECTED BY EDTA, DTPA AND EGTA
REMOBILIZATIONS OF LEAD, NICKEL AND COPPER FROM ELL-REN RIVER SEDIMENT FRACTIONS AFFECTED BY EDTA, DTPA AND EGTA
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DOI：
10.1080/02772249709358400
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发表时间：
1997
影响因子：
1.8
通讯作者：
Kuang-Chung Yu;S. Ho;Jingjie Chang;L. Tsai
中科院分区：
文献类型：
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作者：
Kuang-Chung Yu;S. Ho;Jingjie Chang;L. Tsai
通过批量实验研究了EDTA、DTPA和EGTA三种络合剂对铅、镍和铜的再活化能力，并采用顺序萃取法研究了沉积物结合组分中这些金属含量的变化和转化。EDTA和DTPA在中性pH条件下均具有较强的再动员作用，且其再动员作用随剂量的增加而增强。铅和镍的迁移主要是从“结合在碳酸盐上”和“结合在铁/锰氧化物上”两个组分转移出来的。然而，铜的再活化作用显著地从“结合于有机物”转移到“部分”。
Batch tests were performed to illustrate the remobilization abilities of three chelating agents (EDTA, DTPA, and EGTA) on lead, nickel and copper, as well as sequential extraction method was used to realize the variation and transformation of these metals contents in sediment binding fractions. Both EDTA and DTPA had high remobilization effects at neutral pH conditions, and their remobilization effects were increased by their increasing doses. The remobilizations of lead and nickel were mainly transferred from both “bound to carbonates”; and “bound to Fe/Mn oxides”; fractions. However, the remobilization of copper were remarkably transferred from “bound to organic matter”; fraction.