A field trial was conducted to study the dissipation kinetics of chlorantraniliprole 18.5 % SC on cowpea fruits. The fruit samples drawn periodically were analyzed by liquid chromatography and tandem mass detection (LC-MS/MS). The initial residues of chlorantraniliprole in cowpea fruits were found to be 0.55 mg kg(-1) which dissipated rapidly, with a half-life of 1.31 days and a waiting period of 0.62 days following first order kinetics. Processing of the fruits with solutions commonly used in households reduced the insecticide residues on cowpea fruits harvested 2 h after spraying by 47.19 %-91.70 % and 44.56 %-91.25 % on fruits plucked on the third day.
机构:
Univ Pretoria, Dept Human Nutr, POB 667, ZA-0001 Pretoria, South Africa
Univ Pretoria, Inst Food Nutr & Well Being, POB 667, ZA-0001 Pretoria, South AfricaUniv Pretoria, Dept Human Nutr, POB 667, ZA-0001 Pretoria, South Africa
Vilakati, Nokuthula
Taylor, John R. N.
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机构:
Univ Pretoria, Dept Food Sci, Private Bag X20, ZA-0028 Hatfield, South Africa
Univ Pretoria, Inst Food Nutr & Well Being, Private Bag X20, ZA-0028 Hatfield, South AfricaUniv Pretoria, Dept Human Nutr, POB 667, ZA-0001 Pretoria, South Africa
Taylor, John R. N.
MacIntyre, Una
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机构:
Univ Pretoria, Dept Human Nutr, POB 667, ZA-0001 Pretoria, South Africa
Univ Pretoria, Inst Food Nutr & Well Being, POB 667, ZA-0001 Pretoria, South AfricaUniv Pretoria, Dept Human Nutr, POB 667, ZA-0001 Pretoria, South Africa
MacIntyre, Una
Kruger, Johanita
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Univ Pretoria, Dept Food Sci, Private Bag X20, ZA-0028 Hatfield, South Africa
Univ Pretoria, Inst Food Nutr & Well Being, Private Bag X20, ZA-0028 Hatfield, South AfricaUniv Pretoria, Dept Human Nutr, POB 667, ZA-0001 Pretoria, South Africa