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Details van artikel 6 van 9 gevonden artikelen
| Titel: |
Influence of moisture on the persistence of chlorpyrifos and chlorfenvinphos in sterile and natural mineral and organic soils |
| Auteur: |
Miles, J. R. W. Harris, C. R. Tu, C. M. |
| Verschenen in: |
Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes |
| Paginering: | Jaargang 19 (1984) nr. 2 pagina's 237-243 |
| Jaar: |
1984 |
| Inhoud: |
Chlorpyrifos and chlorfenvinphos persistences were examined (concentration - 10 μg/g) in sterile and natural mineral (sandy loam) and organic (muck) soils at 4 moisture levels; air-dry, and 20, 40 and 60% of moisture holding capacity at 28°C. Chlorpyrifos was fairly stable in sterile soils, with ca. 50% remaining at the end of the 24 wk experiment. In natural soils, chlorpyrifos disappeared most rapidly from air-dry soil; slightly less rapidly from the 3 moist soils. Chlorfenvinphos was fairly stable in sterile soils, with >50% remaining at 24 wk at all moisture levels. In natural soils chlorfenvinphos, in contrast to chlorpyrifos, was more stable in air-dry soils. In moist loam the disappearance rates of chlorfenvinphos were similar for all 3 moisture levels; but in moist muck its disappearance was proportional to the moisture content. “Cis”; (ca 10% of the technical material) and “trans”; chlorfenvinphos disappeared at the same rate in sterile soils. In natural soils the “cis”; isomer disappeared about twice as fast, suggesting specific microbial degradation. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 6 van 9 gevonden artikelen
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