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Colorimetric method for the determination of ethylene dibromide residues in grains and air.

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Title Colorimetric method for the determination of ethylene dibromide residues in grains and air.
 
Creator Rangaswamy, J. R.
Vijayashankar, Y. N.
Muthu, M.
 
Subject 17 Toxicology
08 Grains
 
Description A method based on the hydrolytic determination of ethylene dibromide (EDB) in the presence of an oxidizing agent was developed. Br liberated from inorganic bromide is used to brominate p-rosaniline. The intensity of the resulting violet-red bromo compound in chloroform is measured at 580 nm. The relationship between absorbance and concn. of EDB is linear in the range of 5-60 mug. The method is very sensitive and as little as 0.50 ppm unchanged EDB residue in a 20 g sample of fumigated grain and 1 ppm EDB in a 10 ml air sample can be detected. The method was applied to various grains (wheat, sorghum, paddy, green gram) which had been fumigated with EDB.
 
Date 1976
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://ir.cftri.com/3522/1/Journal%20of%20the%20Association%20of%20Official%20Analytical%20Chemists%2C%20Volume-59%286%20%281976%29%201262-1265.pdf
Rangaswamy, J. R. and Vijayashankar, Y. N. and Muthu, M. (1976) Colorimetric method for the determination of ethylene dibromide residues in grains and air. Journal of the Association of Official Analytical Chemists, 59 (6). 1262-1265, 16 ref..