XPS AND AES STUDIES OF HG(II) SORPTION AND DESORPTION REACTIONS ON SULFIDE MINERALS

被引：90

作者：

HYLAND, MM ^{[1
]}

JEAN, GE ^{[1
]}

BANCROFT, GM ^{[1
]}

机构：

[1] UNIV WESTERN ONTARIO,DEPT CHEM,LONDON N6A 5B7,ONTARIO,CANADA

来源：

GEOCHIMICA ET COSMOCHIMICA ACTA | 1990年 / 54卷 / 07期

关键词：

D O I：

10.1016/0016-7037(90)90264-L

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The sorption and desorption of aqueous HgCl2 on Fe1-xS, FeS2, and PbS have been studied using high resolution X-ray photoelectron and Auger electron spectroscopies. Preliminary desorption studies on Fe1-xS, using ligands of differing Hg(II) complexing strengths, indicate that more than one form of sorbed Hg is present. The most weakly sorbed Hg is desorbed by Cl- and SO32-, more strongly bound Hg is removed by S2O32-, and CN- removes all sorbed Hg. Detailed studies on PbS indicate that there are at least three Hg(II) species present. The most weakly bound, Hg3S2Cl2 and HgClx, are removed by S2O32-. They form on top of a layer of HgS, which is only removed by CN-. During adsorption, Pb is leached from the surface. Only weakly bound Hg(II) is deposited on FeS2; its composition could not be fully determined. © 1990.

引用

页码：1957 / 1967

页数：11

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