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- W2371569043 abstract "Objective: To develop an analysis method based on gas chromatography- triple quadrupole tandem mass spectrometry( GC- QQQ- MS / MS) with accelerated solvent extraction( ASE) for the determination and qualitative confirmation of benzopyrene in Rehmanniae Radix and Rehmanniae Radix Praeparata,and to quantify benzopyrene in 10 samples. Methods: Benzopyrene in the test samples was extracted and purified by ASE with neutral alumina as filler and acetonitrile as solvent. The prepared samples were analysed by GC- QQQ- MS / MS in multiple reaction monitoring( MRM) modes,and an external standard method was applied to quantify benzopyrene. Results: The calibration curves showed good linear relationship between the area and the concentration of benzopyrene from 10 to 200 ng·mL- 1with a correlation coefficient of 0. 991. The average recoveries of benzopyrene ranged from 82. 0% to 96. 5% at three spiked levels of 2,5 and 10 μg·kg- 1. The repeatability RSD( n = 6) was in the range of 7. 4% to 17. 8%. The precision RSD( n = 6) of the instrument was 5. 7%,the limit of detection( LOD) was 1 ng·kg- 1and the limit of quantity( LOQ) was 2 ng·kg- 1. Conclusion: Sensitivity of this method meets the requirements of domestic and foreign benzopyrene residue limits and the qualitative confirmation can be achieved." @default.
- W2371569043 created "2016-06-24" @default.
- W2371569043 creator A5062988049 @default.
- W2371569043 date "2013-01-01" @default.
- W2371569043 modified "2023-09-23" @default.
- W2371569043 title "Determination and confirmation of benzopyrene in Chinese herbal medicines Rehmanniae Radix and Rehmanniae Radix Praeparata by gas chromatography- triple quadrupole tandem mass spectrometry" @default.
- W2371569043 hasPublicationYear "2013" @default.
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