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CJAP ›› 2020, Vol. 36 ›› Issue (6): 668-672.doi: 10.12047/j.cjap.6173.2020.139

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Simultaneous determination of three antidepressant drugs in feces by HLPC-MS

SHAO Yi-fan, ZHANG An-qi, CHEN Tian-jiao, LI Hai-bei, CHEN Zheng-shan, YIN Jing, YANG Dong, SHI Dan-yang, LIANG Yong-bing, CHENG Chun-yan, TAN Rong, SUN Dong-liang, LI Jun-wen, JIN Min   

  1. Tianjin Institute of Environmental and Operational Medicine, Tianjin 300000, China
  • Received:2020-10-10 Revised:2020-11-25 Published:2021-03-15

Abstract: Objective: To establish a high performance liquid chromatography tandem mass spectrometry (HPLC / MS) method for the simultaneous determination of three antidepressant drugs in feces. Methods: Samples were pretreated with n-hexane isopropanol (95:5, v/v). Gradient elution was carried out with mixed liquid of ultrapure water and acetonitrile as mobile phase and separated by Agilent ZORBAX SB-C18 liquid chromatography column (2.1 mm×100 mm, 3.5 m). The samples were detected by electrospray ionization tandem mass spectrometry and quantified by internal standard method. Results: The recoveries of duloxetine, fluoxetine and escitalopram in fecal samples were 61.6% - 116.5%, with precision of 2.80% - 12.9% (n=5). The correlation coefficients (r) of linear equations were all greater than 0.995. The detection limits were 0.1, 1, and 0.001 μg/g, and the limits of quantification were 0.5, 2 and 0.005 μg/g, respectively. Conclusion: The method is simple and accurate to detect the contents of three antidepressants in feces, such as duloxetine, fluoxetine and escitalopram.

Key words: feces, HPLC-MS, antidepressants, mice

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