Pyritization of trace metals in mangrove sediments

被引：23

作者：

Andrade, R. A. ^{[1
]}

Sanders, C. J. ^{[1
]}

Boaventura, G. ^{[2
]}

Patchineelam, S. R. ^{[1
]}

机构：

[1] Univ Fed Fluminense, Dept Geoquim, BR-24020007 Niteroi, RJ, Brazil

[2] Univ Brasilia, Inst Geociencias, Dept Geoquim & Recursos Minerais, Brasilia, DF, Brazil

来源：

ENVIRONMENTAL EARTH SCIENCES | 2012年 / 67卷 / 06期

关键词：

Mn; Zn; Ni; Co; Mangrove; Sediment; MARINE-SEDIMENTS; PYRITE; SULFUR; IRON;

D O I：

10.1007/s12665-012-1620-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The present study investigates the levels of Mn, Zn, Ni, and Co pyritization in mangrove sediments along distinct sedimentary zones in Enseada das Gracas, a lagoon-type estuary located on the southeastern coast of Brazil. The coastal geology is characterized by intense interactions of trace metals, forming pyrite minerals. Specific orders of DOP (degree of pyritization) and DTMP (degree of trace-metal pyritization) are shown: supratidal flat < mangrove forest < mud flat. Distinct changes in content along the sediment profiles are noted, where a supratidal flat presented low levels of DOP and DTMP with little variance along the sedimentary depths. The mangrove forest showed relatively high values of DOP and DTMP in the lower depths, while the mud flat showed the highest levels of DOP and DTMP.

引用

页码：1757 / 1762

页数：6

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