کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1208742 | 965315 | 2008 | 5 صفحه PDF | دانلود رایگان |

A sensitive and specific method for determining fenitrothion and its main metabolites, 3-methyl-4-nitrophenol and fenitrooxon, in poplar leaves using deuterated isotopes as the internal standard is described. The analytes and the labeled isotopes were extracted from leaves by solid-phase microextraction and subsequently analysed by gas chromatography coupled with mass spectrometry. The method had a chromatographic run time of 17.0 min and good linearity over the range 0.01–10 mg kg−1. The detection limits ranged between 2.5 and 0.6 μg kg−1. The isotopic dilution technique allowed improving significantly the repetitivity even using different fibers with the same coating (RSD < 5.1%). The method was applied successfully to study the persistence of fenitrothion in forestal matrices in a poplar forest after cannon spray application of the insecticide.
Journal: Journal of Chromatography A - Volume 1177, Issue 1, 4 January 2008, Pages 170–174