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Adsorption, Desorption, Soil Mobility and Aqueous Persistence of Fensulfothion and Its Sulfide and Sulfone Metabolites

Adsorption, Desorption, Soil Mobility and Aqueous Persistence of Fensulfothion and Its Sulfide and Sulfone Metabolites

J R Miles, B T Bowman, C R Harris

J Environ Sci Health B. 1981;16(3):309-24.

PMID: 6454719

Abstract:

Soil/water interactions with the insecticide fensulfothion and its sulfide and sulfone metabolites and described. Adsorption to, and desorption from four soils were studied. There was a general inverse relationship between water solubilities of the three chemicals and their adsorption K values. Order of adsorption was f. sulfide greater than f. sulfone greater than fensulfothion. Adsorption K values correlated significantly with soil organic content. Desorption of fensulfothion and the sulfone were similar whereas the less soluble sulfide desorbed to a lesser extent. To facilitate comparison of desorption tendencies of the three compounds of desorption index was developed. Mobilities through the soils were directly related to the water solubilities of the three chemicals. Mobilities in decreasing order were - fensulfothion greater than f. sulfone greater than f. sulfide. Persistence of fensulfothion was similar in both sterile and non-sterile natural water - about 50% remaining at the end of the 16 wk experiment. Under reducing conditions fensulfothion disappeared from water in 8-12 wk with almost complete conversion to the sulfide.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP6132178	Fensulfothion PO-sulfone		6132-17-8	Price

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