Spectrophotometric determination of carbaryl pesticide and its hydrolysis product in soil and strawberry samples


Demirbas A.

SCIENCE OF THE TOTAL ENVIRONMENT, vol.220, pp.235-241, 1998 (Peer-Reviewed Journal) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 220
  • Publication Date: 1998
  • Doi Number: 10.1016/s0048-9697(98)00251-4
  • Journal Name: SCIENCE OF THE TOTAL ENVIRONMENT
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.235-241

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 l-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 l-naphthol content of soil samples was 16.29. The samples were obtained from their sources during 1 day after approx. 24 h of rain. (C) 1998 Elsevier Science B.V. All rights reserved.