A New Approach to the Assessment of the Safety of Tea, Coffee, Cocoa, and Vegetable Oils, Based on the Rapid Screening of Samples for the Total Concentration of Fluorine-, Chlorine-, and Bromine-Containing Organic Compounds

We propose a new approach to assessing the contamination of tea, coffee, cocoa, and vegetable oils with F-, Cl-, Br- and S-containing organic pesticides and other hazardous anthropogenic and natural compounds at a trace level. The approach ensures the rapid screening of test samples for the total co...

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Bibliographic Details
Published in:Journal of analytical chemistry (New York, N.Y.) N.Y.), 2021-05, Vol.76 (5), p.613-620
Main Authors: Revel’skii, I. A., Chivarzin, M. E., Gerasimov, M. A., Frolova, A. V., Dolgonosov, A. M., Skalnyi, A. V., Revel’skii, A. I., Buryak, A. K.
Format: Article
Language:English
Subjects:
Absorption
Analytical Chemistry
Bromine compounds
Chemistry
Chemistry and Materials Science
Chlorine compounds
Cocoa
Coffee
Conversion
Deionization
Fluorides
Fluorine
High temperature
Inorganic salts
Nuclear engineering
Nuclear safety
Organic compounds
Organosulfur compounds
Pesticides
Reliability analysis
Safety and security measures
Screening
Vegetable oils
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Summary:We propose a new approach to assessing the contamination of tea, coffee, cocoa, and vegetable oils with F-, Cl-, Br- and S-containing organic pesticides and other hazardous anthropogenic and natural compounds at a trace level. The approach ensures the rapid screening of test samples for the total concentration of all halogen and sulfur organic compounds present in the samples. Sample preparation is excluded. The procedure is based on the direct high-temperature oxidative conversion of a test sample under oxygen; the absorption of inorganic salts present in the sample in a reactor; the absorption of the conversion products of organic compounds of the sample, including the analyzed ones, by deionized water with the formation of F – , Cl – , Br – and SO anions; and their determination in the absorbate by ion chromatography. This approach ensures the simultaneously reliable determination of all volatile, medium-volatile, and nonvolatile organohalogen and organosulfur compounds present in one sample and, thereby, improves the reliability of detection by eliminating their losses during the analysis.
ISSN:1061-9348
1608-3199
DOI:10.1134/S1061934821050154