Applicability of Superheated Water Extraction for the Quantification of Pesticide Residues in Leafy Vegetables

• Published in: Analytical Sciences Vol. 37; no. 11; pp. 1625 - 1628
• Main Authors: YARITA, Takashi, HASEGAWA, Atsuhiko, TADA, Hiroko
• Format: Journal Article
• Language: English
• Published: Singapore The Japan Society for Analytical Chemistry 10.11.2021; Springer Nature Singapore; Japan Science and Technology Agency
• Subjects: Analytical Chemistry; Brassica; Brassica oleracea; Chemistry; Fenitrothion; gas chromatography–mass spectrometry; octanol–water partition coefficient; organophosphorus pesticides; Pesticide residues; Pesticide Residues - analysis; Pesticides; Pesticides - analysis; Polarity; Recovery; residual pesticides; Residues; Superheated water extraction; Vegetables; Water; organophosphorus pesticides; residual pesticides; octanol–water partition coefficient; fenitrothion; Superheated water extraction; gas chromatography–mass spectrometry
• ISSN: 0910-6340; 1348-2246
• DOI: 10.2116/analsci.21N003

Superheated water extraction (SWE) of pesticide residues in a cabbage sample was demonstrated. The recovery yields of several relatively polar pesticides (log Pow < 3) by the spike-and-recovery method at 100°C were acceptable. Increasing the extraction temperature up to 150°C led to enhanced extraction efficiency except for pesticides that induced degradation. The recovery yields of some target pesticides having log Pow values of 3.5 – 4 were effectively enhanced by increasing the number of extraction cycles. The observed concentration of fenitrothion in a cabbage sample was comparable with those by the official Japanese analytical method. These results suggested SWE is potentially suitable for the extraction of different relatively high-to-medium polarity pesticides.