Spectrophotometric determination of carbaryl pesticide and its hydrolysis product in soil and strawberry samples.
A spectrophotometric method for the determination of carbaryl in soil and strawberry fruit samples is described. The method is based on the coupling of 1-naphthol obtained from hydrolysing carbaryl with diazotised sulphanilic acid in an alkaline medium to form p-(4-hydroxyl-1-naphtylaza)benzenesulphonic acid which has a maximum absorbance at 475 nm. Beer's law is obeyed in the range of 0.01-0.1 ppm of carbaryl. The proposed method is sensitive and rapid. The average carbaryl content of strawberry fruits was 6.03 ppm and the average 1-naphthol content of soil samples was 16.29. The samples were obtained from their sources during 1 day after approx. 24 h of rain.
Demirbaş
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Karadeniz Technical University, Fatih Educational Faculty, Trabzon, Turkey.
D012721:Carbaryl / Q000009:adverse effects / Q000032:analysis*; D005506:Food Contamination / Q000032:analysis*; D005638:Fruit / Q000009:adverse effects / Q000737:chemistry*; D006868:Hydrolysis; D007306:Insecticides / Q000009:adverse effects / Q000032:analysis*; D009284:Naphthols / Q000032:analysis; D012989:Soil Pollutants / Q000009:adverse effects / Q000032:analysis; D013053:Spectrophotometry
D007306:Insecticides; D009284:Naphthols; D012989:Soil Pollutants; C029350:1-naphthol; D012721:Carbaryl