Contribution of Oil Industry Activities to Environmental Loads of Heavy Metals in the Tabasco Lowlands, Mexico

被引：34

作者：

Fiedler, S. ^{[1
]}

Siebe, C. ^{[2
]}

Herre, A. ^{[3
]}

Roth, B. ^{[1
]}

Cram, S. ^{[4
]}

Stahr, K. ^{[1
]}

机构：

[1] Univ Hohenheim, Inst Soil Sci & Land Evaluat, D-70599 Stuttgart, Germany

[2] Univ Nacl Autonoma Mexico, Inst Geol, Mexico City 04510, DF, Mexico

[3] TU Berlin, Inst Ecol, Dept Soil Sci, D-10587 Berlin, Germany

[4] Univ Nacl Autonoma Mexico, Inst Geog, Mexico City 04510, DF, Mexico

来源：

WATER AIR AND SOIL POLLUTION | 2009年 / 197卷 / 1-4期

关键词：

Soil; Sediments; Pollution; Metal fractionation; Redox; CRASSOSTREA-VIRGINICA; AMERICAN OYSTER; TRACE-METALS; SEDIMENTS; ELEMENTS; LAGOONS;

D O I：

10.1007/s11270-008-9789-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In Tabasco the petroleum industry pollutes soil recurrently by oil spills. We analysed Pb, V, Ni and Cr concentrations in water samples, and total metal contents and metal fractions in soil samples of contaminated and non-contaminated soils and in sediments. Besides, we determined Eh, pH, DOC and major ions in water and Eh, pH, C-org in soils and sediments. Sediments contained considerably larger heavy metal (HM) concentrations than soils. Local background concentrations of V, Ni and Cr in soils are larger than global means and oil spillages have not added these metals in quantities that exceed the natural variation. Spillage of formation water increases Pb concentrations in soils, particularly in mobile fractions. The contribution of the oil industry to HM loads is diluted by large fluvial water and sediment discharges and difficult to assess by comparison of total metal contents. Therefore, easily mobile metal fractions are much better indicators.

引用

页码：35 / 47

页数：13

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