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Determination of the Herbicide Dimethylamine Salt of 2,4‐Dichlorophenoxyacetic Acid in Surface Water
This study demonstrated that 95 to 100 per cent of the herbicide dimethyl amine salt of 2,4‐ dichlorophenoxyacetic acid was recovered from surface water by liquid‐liquid extraction with 75‐50‐50‐ml portions of methylene chloride as the solvent. The experimental approach consisted of evaporating the methylene chloride with diethyle ether or petroleum ether. Esterify with diazomethane and make up to a known volume with n‐hexane. Dimethylamine salts of 2,4‐D will dissipate in surface water if they are not extracted soon after collection, or if they are not kept at a low enough temperature. With this method of recovery, a determination of concentrations of 0.01 mg/l 2,4‐D can be obtained with the gas chromatograph electron capture detector.
Determination of the Herbicide Dimethylamine Salt of 2,4‐Dichlorophenoxyacetic Acid in Surface Water
This study demonstrated that 95 to 100 per cent of the herbicide dimethyl amine salt of 2,4‐ dichlorophenoxyacetic acid was recovered from surface water by liquid‐liquid extraction with 75‐50‐50‐ml portions of methylene chloride as the solvent. The experimental approach consisted of evaporating the methylene chloride with diethyle ether or petroleum ether. Esterify with diazomethane and make up to a known volume with n‐hexane. Dimethylamine salts of 2,4‐D will dissipate in surface water if they are not extracted soon after collection, or if they are not kept at a low enough temperature. With this method of recovery, a determination of concentrations of 0.01 mg/l 2,4‐D can be obtained with the gas chromatograph electron capture detector.
Determination of the Herbicide Dimethylamine Salt of 2,4‐Dichlorophenoxyacetic Acid in Surface Water
Wilder, Ernest T. (author)
Journal ‐ American Water Works Association ; 60 ; 827-831
1968-07-01
5 pages
Article (Journal)
Electronic Resource
English
Chloride , Surface Water , Acids , Recovery , Salts , Gas Chromatography , Extraction , Herbicides
Degradation of 2,4-dichlorophenoxyacetic acid in water by ozone-hydrogen peroxide process
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