| Toxicity of haloacetic acids to freshwater algae. | |
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MedLine Citation:
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PMID: 19828197 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Haloacetic acids (HAA), such as trichloroacetic acid (TCA), are commonly occurring by-products from disinfection and bleaching processes using sodium hypochlorite. Currently, the lowest no observed effect concentration (NOEC) for TCA is reported to be 8.7microgL(-1), which was derived from a toxicity study conducted in 1981 on Chlorella pyrenoidosa. The purity of the test material was not documented and it is unknown if other halogenated impurities or co-formulants were present. However, this NOEC is used to derive a predicted no effect concentration, which is used in various regulatory risk assessments. We present a range of algal toxicity studies conducted on five different algal species and two HAAs and observed no toxicity of TCA to C. pyrenoidosa at 115mgL(-1). The most sensitive species to TCA (NOEC, 3mgL(-1)) were Pseudokirchneriella subcapitata and Scenedesmus subspicatus, demonstrating that the toxicity of TCA to algae is over two orders of magnitude less sensitive than previously reported. |
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Authors:
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Jayne F Roberts; Roger van Egmond; Oliver R Price |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-10-13 |
Journal Detail:
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Title: Ecotoxicology and environmental safety Volume: 73 ISSN: 1090-2414 ISO Abbreviation: Ecotoxicol. Environ. Saf. Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2009-11-10 Completed Date: 2010-01-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7805381 Medline TA: Ecotoxicol Environ Saf Country: United States |
Other Details:
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Languages: eng Pagination: 56-61 Citation Subset: IM |
Affiliation:
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Safety and Environmental Assurance Centre, Unilever, Colworth Science Park, Sharnbrook, Bedfordshire, MK44 1LQ, UK. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Algae
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drug effects* Chlorella / drug effects, growth & development Scenedesmus / drug effects Toxicity Tests Trichloroacetic Acid / toxicity* Water Pollutants, Chemical / toxicity* |
| Chemical | |
Reg. No./Substance:
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0/Water Pollutants, Chemical; 76-03-9/Trichloroacetic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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