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  • Title: Development of green onion and cabbage certified reference materials for quantification of organophosphorus and pyrethroid pesticides.
    Author: Otake T, Yarita T, Aoyagi Y, Kuroda Y, Numata M, Iwata H, Mizukoshi K, Nakamura M, Watai M, Mitsuda H, Fujikawa T, Ota H.
    Journal: J Agric Food Chem; 2011 Aug 24; 59(16):8568-74. PubMed ID: 21774469.
    Abstract:
    Green onion and cabbage certified reference materials for the analysis of pesticide residues were issued by the National Metrology Institute of Japan, part of the National Institute of Advanced Industrial Science and Technology. Green onion and cabbage samples were grown so as to contain several kinds of organophosphorus and pyrethroid pesticides, and those were collected from a field in the Kochi Prefecture in Japan. The certification was carried out by using multiple analytical methods to ensure the reliability of analytical results; the values of target pesticides (diazinon, fenitrothion, cypermethrin, etofenprox, and permethrin for green onion and chlorpyrifos, fenitrothion, and permethrin for cabbage) were obtained by isotope dilution mass spectrometry. Certified values of target pesticides were 0.96-13.9 and 2.41-6.9 mg/kg for green onion and cabbage, respectively. These are the first green onion and cabbage powder certified reference materials in which organophosphorus and pyrethroid pesticides are determined.
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