CADMIUM COMPLEXATION BY COAL HUMIC-ACID

被引：15

作者：

WHITWORTH, C ^{[1
]}

PAGENKOPF, GK ^{[1
]}

机构：

[1] MONTANA STATE UNIV,DEPT CHEM,BOZEMAN,MT 59717

来源：

JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY | 1979年 / 41卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0022-1902(79)80140-2

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Humic acid (HA) has been extracted with base from a sub-bituminous coal and characterized. Complexation studies with cadmium indicate the formation of complexes with stoichiometry; CdHA, Cd2HA and Cd3HA. The log β*11 values for CdHA at pH 5.5, 6.0, 7.0 and 7.5 are 4.9, 5.3, 5.9 and 6.3 respectively. For Cd2HA at pH 6.0, 7.0 and 7.5 the log β*21 values are 9.2, 10.6 and 11.7 and at pH 6.0, 7.0 and 7.5 the log β*31 values are 13.7, 15.7 and 16.5 respectively. The average gram formula weight is 6761 ± 842. © 1979.

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页码：317 / 321

页数：5

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