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- E-ISSN 2288-8985
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Analysis of Half-life Time and Residual Concentration of Ethalfluralin Herbicide in Soils
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1997, v.10 no.3, pp.168-178
Han,
S. S., Rim,
Y. S., &
Kim,
I.
K.
(1997). Analysis of Half-life Time and Residual Concentration of Ethalfluralin Herbicide in Soils. Analytical Science and Technology, 10(3), 168-178.
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Abstract
The optimum conditions for the residual analysis of the ethalfluralin herbicide on soils were investigated and the residues in soils were determined by gas chromatography with electron capture detector(GC-ECD). The soil samples extracted with methanol and dichloromethane and concentrated. The concentrated phase were redissolved with toluene and analyzed with GC-ECD after separated by cyanosilica gel Sep-Pak cartridge. From the standard addition experiments with 0.1 and 1.0ppm, the average recoveries were 92.8~101.2% and the detection limit was 0.004ppm. The half-life time of ethalfluralin in the soil(A) was 35 days in the laboratory and 7.2 days in the field test whereas it was 45 days and 9.7 days for each in case of soil(B).
- keywords
- Ethalfluralin, soil, gas chromatographic analysis, residual analysis, half-life time
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