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  • Title: Spectrophotometric determination of carbaryl pesticide and its hydrolysis product in soil and strawberry samples.
    Author: Demirbaş A.
    Journal: Sci Total Environ; 1998 Sep 18; 220(2-3):235-41. PubMed ID: 9810730.
    Abstract:
    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.
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