Full TGIF Record # 37414
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Web URL(s):http://www.tandfonline.com/doi/pdf/10.1080/03601239409372919
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Publication Type:
Author(s):Spieszalski, Witold; Niemczyk, Harry D.; Shetlar, David J.
Author Affiliation:OARDC/ The Ohio State University Department Entomology, Wooster, OH 44691
Title:Sorption of chlorpyrifos and fonofos on four soils and turfgrass thatch using membrane filters
Source:Journal of Environmental Science and Health: Part B: Pesticides, Food Contaminants, and Agricultural Wastes. Vol. 29, No. 6, November 1994, p. 1117-1136.
# of Pages:20
Publishing Information:New York: Marcel Dekker
Related Web URL:http://www.tandfonline.com/doi/abs/10.1080/03601239409372919
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    Notes: Abstract
Keywords:TIC Keywords: Thatch; Insecticides; Soil sorption; Soil chemistry; Soil contamination; Chlorpyrifos; Fonofos
Abstract/Contents:"Chemical transport in soil is a major factor influencing soil and water contamination. Four soils and turfgrass thatch, representing a wide range of organic carbon OC content were studied to determine sorption K^D[d and K^D[f parameters for the insecticides chlorpyrifos and fonofos. The batch equilibrium method was used. The concentration of insecticide was measured in the solution as well as in the solid phase to determine the most accurate sorption data. Four soils and thatch were equilibrated for 24 h at 22 ± 1°C with aqueos insecticide solutions. Four concentrations of the insecticides, each < 50% of their respective water solubilies, were selected for the experiments. After extraction with an organic solvent, the concentration of insecticides in the aqueous solution was determined by gas liquid chromatography using electron capture detection for chlorpyrifos, and nitrogen/phosphorus detection for fonofos. Data obtained were fitted to the log and simple linear form of the Freundlich equation. Mass balance Freudlich isotherm exponents n ranged between 0.82 and 0.93 for chlorpyrifos, 0.82 and 1.21 for fonofos, with r²≥0.97. Kₒc (percent of organic carbon %OC normalized sorption coefficient) values were calculated by using experimentally developed K^D[d and K^D[f coefficients in relation to OC levels from 0.29 to 34.85%. K^D[d and K^D[f coefficients of both insecticides were positively correlated with OC (r²≥ 0.96), organic matter OM (r²≥ 0.96), and cation exchange capacity CEC (r²≥ 0.90)."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Spieszalski, W., H. D. Niemczyk, and D. J. Shetlar. 1994. Sorption of chlorpyrifos and fonofos on four soils and turfgrass thatch using membrane filters. J. Environ. Sci. Health. 29(6):p. 1117-1136.
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    Last checked: 01/26/2018
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