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Determination of carbofuran residues in potato, onion and turnip: Comparative analyses using gas chromatography-selected ion monitoring or high-performance liquid chromatography by J.R. Robinson; R.A. Chapman is a Chemistry article available to read on EtoBox.
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Potato, onion and turnip were analyzed for residues of carbom, 3-hydroxycarbofuran and 3-ketocarbofuran to 0.01 ppm by separation and quantitation of heptafbrorobutyryl (FFB) derivatives using gas chromatography-chemical iotition mass spectrometry with sekcted-ion mouitor detection at 228 a.m.u. Extracts of acid-digested crops (5 g/ml) required ckanup by liquid-solid chromatography and treatment with 30 @/ml of heptafiuorobutyric anhydride (HFBA) before reproducible derivative formation and interference-free analysis could be a&ieved. This comen-&&ion of HFBA~necessitated that excess reagent and by-products be removed before anaIysis. The effects of this and other modifications on former preparative procedures and recoveries are discussed. Analysis of the ckaned-up extracts by gas chromatography of the HFR derivatives using electron-capture detection was still impossible because of interference\_ The chromatographic properties of the three carbamates and their respective phenols on adsorption and reversed-phase high-performance liquid chromatography were determined and the applicability of the technique to the analysis of the cleaned-up extracts was investigated and found to be uns
Who reads Determination of carbofuran residues in potato, onion and turnip: Comparative analyses using gas chromatography-selected ion monitoring or high-performance liquid chromatography?
It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- J.R. Robinson; R.A. Chapman
- Publisher
- Elsevier BV
- Published
- 1980
- Language
- EN
- Field
- Chemistry (Physical Sciences)