Spatial Distribution of Heavy Metals in Top Soils Around the Industrial Facilities of Cromatos de México, Tultitlan Mexico

The environmental damage caused by industrial activities in Cromatos de México, (Tultitlán, México) has been evaluated in terms of heavy metal concentrations in topsoils of the surrounding area. The concentrations of lead, copper and zinc demonstrate a significant enrichment with respect to unpollut...

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Veröffentlicht in:Bulletin of environmental contamination and toxicology 2010-11, Vol.85 (5), p.520-524
Hauptverfasser: Morton-Bermea, Ofelia, Hernández-Álvarez, Elizabeth, Lozano, Rufino, Guzmán-Morales, Janin, Martínez, Gerardo
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container_title Bulletin of environmental contamination and toxicology
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creator Morton-Bermea, Ofelia
Hernández-Álvarez, Elizabeth
Lozano, Rufino
Guzmán-Morales, Janin
Martínez, Gerardo
description The environmental damage caused by industrial activities in Cromatos de México, (Tultitlán, México) has been evaluated in terms of heavy metal concentrations in topsoils of the surrounding area. The concentrations of lead, copper and zinc demonstrate a significant enrichment with respect to unpolluted levels. Their maximum enrichment factors are 37.7, 21.1 and 9.6 mg kg⁻¹, respectively; such increase is related to traffic emissions. Nickel concentrations show no significant difference in the analyzed samples. Total chromium concentrations show a significant decrease with distance from the industrial facilities, ranging from 15 to 1,837 mg kg⁻¹. The enrichment factors of chromium (total), with respect to the background values reach up to 40.8 mg kg⁻¹. In spite of this pronounced increase, only three analyzed samples show chromium (VI) concentrations over 0.5 mg kg⁻¹ (instrumental detection limit) and do not exceed the values recommended by the Mexican official norm. The current results show that the chromium present in the studied area does not represent serious health risks and environmental damage in the zone, nevertheless, it is necessary to consider that the oxidation of chromium (III) is determinate by changes in redox and/or pH conditions which would imply significant impacts upon its toxic risk. This study suggests that the waste material generated during the industrial activities of Cromatos de Mexico represents a relevant metal pollution source for the area even 30 years after the closure of the industrial facilities.
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The current results show that the chromium present in the studied area does not represent serious health risks and environmental damage in the zone, nevertheless, it is necessary to consider that the oxidation of chromium (III) is determinate by changes in redox and/or pH conditions which would imply significant impacts upon its toxic risk. 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The concentrations of lead, copper and zinc demonstrate a significant enrichment with respect to unpolluted levels. Their maximum enrichment factors are 37.7, 21.1 and 9.6 mg kg⁻¹, respectively; such increase is related to traffic emissions. Nickel concentrations show no significant difference in the analyzed samples. Total chromium concentrations show a significant decrease with distance from the industrial facilities, ranging from 15 to 1,837 mg kg⁻¹. The enrichment factors of chromium (total), with respect to the background values reach up to 40.8 mg kg⁻¹. In spite of this pronounced increase, only three analyzed samples show chromium (VI) concentrations over 0.5 mg kg⁻¹ (instrumental detection limit) and do not exceed the values recommended by the Mexican official norm. The current results show that the chromium present in the studied area does not represent serious health risks and environmental damage in the zone, nevertheless, it is necessary to consider that the oxidation of chromium (III) is determinate by changes in redox and/or pH conditions which would imply significant impacts upon its toxic risk. This study suggests that the waste material generated during the industrial activities of Cromatos de Mexico represents a relevant metal pollution source for the area even 30 years after the closure of the industrial facilities.</abstract><cop>New York</cop><pub>New York : Springer-Verlag</pub><pmid>20936254</pmid><doi>10.1007/s00128-010-0124-8</doi><tpages>5</tpages></addata></record>
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source MEDLINE; SpringerLink Journals - AutoHoldings
subjects Aquatic Pollution
Automotive exhaust emissions
Chromium
Chromium - analysis
Copper - analysis
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental degradation
Environmental Health
Environmental Monitoring
Health risks
Heavy metals
Industrial areas
Industrial facilities
Industrial plants
Industrial wastes
Lead - analysis
Metal concentrations
Metals
Metals, Heavy - analysis
Mexico
Nickel
Nickel - analysis
Pollution
Pollution sources
Soil - chemistry
Soil contamination
Soil Pollutants - analysis
Soil Science & Conservation
Spatial distribution
Topsoil
Toxicology
Vehicle emissions
Waste materials
Waste Water Technology
Water Management
Water Pollution Control
Zinc - analysis
title Spatial Distribution of Heavy Metals in Top Soils Around the Industrial Facilities of Cromatos de México, Tultitlan Mexico
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