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| Titel: |
Persistence of residues in water and sediment op a fresh-water lake after surface application of technical chlordane |
| Auteur: |
Oloffs, P. C. Albright, L. J. Szeto, S. Y. |
| Verschenen in: |
Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes |
| Paginering: | Jaargang 13 (1978) nr. 1 pagina's 47-58 |
| Jaar: |
1978 |
| Inhoud: |
A fresh-water lake, free from detectable pesticide residues before this study, was treated with a commercial formulation of technical chlordane. Water and sediment samples were analysed for chlordane residues 7, 24, 52, 279. and 421 days after treatment. Residues moved rapidly from the water to the lake bottom, supporting earlier results of a laboratory study with other organochlorines. In water, α- and γ-chlordane concentrations remained proportional to total chlordane concentrations, as determined by total-peak area measurements of gas-liquid chronatogrammes. But in bottom sediments, α- and γ-chlordane were more persistent than other constituents of technical chlordane, supporting recent evidence that quantification of technical chlordane residues on the basis of γ-chlordane quantification only (or that of a- and γ-chlordane only), can lead to incorrect results and that this method, although simple and fast, should no longer be recommended. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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