Source:http://linkedlifedata.com/resource/pubmed/id/15092299
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
2
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| pubmed:dateCreated |
2004-4-19
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| pubmed:abstractText |
Aquifers in the Región Lagunera in northern Mexico are heavily contaminated with arsenic. The range of total arsenic concentrations in 128 water samples analyzed was 0.008 to 0.624 mg litre(-1), and concentrations greater than 0.05 mg litre(-1) were found in 50% of them. Approximately 400 000 people living in rural areas were exposed to high As concentrations. Most of the As was in inorganic form and pentavalent arsenic [As(V)] was the predominant species in 93% of the samples. In 36% of the samples, however, variable percentages (20-50) of trivalent As [As(III)] were found. Organic arsenicals were present in very small amounts. Since As(III) is several times more toxic than As(V), we suggest that periodic studies be performed on the As(III)/As(V) ratio in wells whose total As concentrations are above 0.05 mg litre(-1), in combination with epidemiological studies to evaluate possible differences in health effects produced by different As species.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:issn |
0269-7491
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
64
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
143-53
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| pubmed:year |
1990
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| pubmed:articleTitle |
The oxidation states of arsenic in well-water from a chronic arsenicism area of northern Mexico.
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| pubmed:affiliation |
Departmento de Farmacologia y Toxicologia, CINVESTAV-IPIN, AP 14-740, Mexico, DF 07000, Mexico.
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| pubmed:publicationType |
Journal Article
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