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Determination of methanol in cosmetics by headspace and multidimensional gas chromatography with mass spectrometric
Xionghai Yi1, Dehua Guo, Xiaojun Deng
1Shanghai Exit and Entry Inspection & Quarantine Bureau, Technical Center for Food, Animal and Plant Inspection and Quarantine, 1208 Minsheng Rd, Shanghai 201135, People's Republic of China. yixh@shciq.gov.cn
Abstract:
A novel, reliable, and robust analytical method using headspace and multidimensional GC coupled to MS was successfully developed for determining the methanol content in cosmetics. The methanol was quantitatively analyzed and confirmed by heart-cutting multidimensional GC and mass selective detection in full scan mode. The average recovery was 99.8% with an RSD of 4.3%; the LOQ was 5 mg/kg. The proposed method showed good accuracy and precision while minimizing erroneous results due to false positives compared with conventional single-column GC analysis.
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