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

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 ma...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2009-02, Vol.197 (1-4), p.35-47
Main Authors: Fiedler, S., Siebe, C., Herre, A., Roth, B., Cram, S., Stahr, K.
Format: Article
Language:English
Subjects:
Atmospheric Protection/Air Quality Control/Air Pollution
Chromium
Climate Change/Climate Change Impacts
Crude oil
Dry season
Earth and Environmental Science
Environment
Environmental factors
Environmental impact
Environmental monitoring
Heavy metals
Hydrogeology
Lead
Metal concentrations
Oil and gas industry
Oil fields
Oil pollution
Oil spills
Petroleum industry
Precipitation
Sediment discharge
Sediments
Soil contamination
Soil pollution
Soil Science & Conservation
Soil sciences
Studies
Surface water
Water analysis
Water Quality/Water Pollution
Water sampling
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Summary: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.
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-008-9789-6