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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Determination of clethodim and its oxidation metabolites in crops by liquid chromatography with confirmation by LC/MS.

A method was developed for determination of the herbicide clethodim (C0) and its oxidation metabolites clethodim sulfoxide (C1) and clethodim sulfone (C2) in agricultural products. Upon extraction, both C0 and C1 were oxidized to C2 by m-chloroperoxybenzoic acid, and C2 was determined by liquid chromatography (LC). The C2 peak was confirmed by liquid chromatography/ mass spectrometry (LC/MS) with electrospray ionization (ESI). Recoveries of C0 from radish, tomato, onion, sweet potato, kidney bean, carrot, cabbage, and lettuce ranged from 91 to 118% following fortification at 0.05-1.0 ppm. The detection limit of C2 in crops was 0.01 ppm (S/N > 3). The fortified samples of onion, sweet potato, kidney bean, and carrot were confirmed by LC/MS (ESI), and the peak of C2 was detected.[1]

References

  1. Determination of clethodim and its oxidation metabolites in crops by liquid chromatography with confirmation by LC/MS. Ishimitsu, S., Kaihara, A., Yoshii, K., Tsumura, Y., Nakamura, Y., Tonogai, Y. Journal of AOAC International. (2001) [Pubmed]
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