Spectrophotometric Determination of Malathion (An Organo Phosphorous Insecticide) with Potassium Bromate
More details
Hide details
Department of Chemistry, G.I.T, GITAM University, Rushikonda, Visakhapatanam-530045, A.P, India
Publish date: 2017-11-02
Eurasian J Anal Chem 2013;8(3):131–135
Malathion is an organophosphate insecticide. A simple spectrophotometric method for the determination of malathion is described. Malathion is decomposed by alkali to dimethyl dithiophosphate. The formed dimethyl dithiophosphate reacts with potassium bromate in presence of dilute nitric acid with the formation of orange-yellow color.The absorbance maximum was observed at 415 nm. The Beers law is obeyed up to 8 ppm for malathion standard solution. Water and vegetable samples were collected in different areas of Visakhapatnam district, Andhra Pradesh, India to determine the malathion and found low levels in the range up to 0.04 ppm.Interference study was carried for other pesticides and ions.
Nutulapati Venkata Satya Venugopal   
Department of Chemistry, G.I.T, GITAM University, Rushikonda, Visakhapatanam-530045, A.P, India
1. Maugh II, Thomas H (2010). "Study links pesticide to ADHD in children". Los Angeles Times. http://articles.latimes.com/20.... (Date: 16 May 2010).
2. Malathion for mosquito control, US EPA (2007, 1-6).
3. Bonner MR, Coble J, Blair A, et al. (2007). "Malathion Exposure and the Incidence of Cancer in the Agricultural Health Study". American Journal of Epidemiology 166 (9):1023. doi:10.1093/aje/kwm182. PMID 17720683.
4. Edwards D (2006). "Reregistration Eligibility Decision for Malathion". US Environmental Protection Agency - Prevention, Pesticides and Toxic Substances EPA 738-R-06-030 journal: 9. http://www.epa.gov/pesticides/ reregistration/REDs/malathion_red.pdf.
5. http://www.sciencedaily.com/re....
6. Khuhawar M Y, Channar A H and Lanjwani S N (1996) Indirect liquid chromatographic determination of malathion based on Copper(II) dimethyldithiophosphate complex formation. J Chromatographia, 42,11-12, 680-682.
7. Norris MV, Vail W A and Averell P R (1954) Pesticide residues,colorimetric estimation of malathion residues. J Agri Food Chem, 2: 570.
8. Clark E R, Quazi I A (1980) Further improvement of the modified Spectrophotometric method for the determination of malathion. Analyst, 105: 564-567.