WANG Wei-li,LIN Xue-xian,LIU Zhen-ni,LIN Yi-yun,CUI Ze-feng,DING Chen-hong,WAN Kai.Simultaneous Determination of Six Sedatives in Feed by Liquid Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2025,44(04):652-659.
WANG Wei-li,LIN Xue-xian,LIU Zhen-ni,LIN Yi-yun,CUI Ze-feng,DING Chen-hong,WAN Kai.Simultaneous Determination of Six Sedatives in Feed by Liquid Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2025,44(04):652-659. DOI: 10.12452/j.fxcsxb.240724248.
Simultaneous Determination of Six Sedatives in Feed by Liquid Chromatography-Tandem Mass Spectrometry
A simultaneous determination method was established of methaqualone,diazepam,perphenazine,thioridazine hydrochloride,chlorpromazine hydrochloride and promethazine hydrochlorine in feeds using mixed cation exchange solid-phase extraction(SPE) by liquid chromatography tandem mass spectrometry(LC-MS/MS). The samples(compound feed,concentrated feed,additive premixed feed and concentrate supplement) were extracted with 0.5 mol/L hydrochloric acid solution-acetonitrile(1∶9),purified by a mixed cation exchange SPE column and then injected into LC-MS/MS. The chromatographic separation of six sedatives were conducted on a C
18
chromatographic column(100 mm×2.1 mm,2.6 μm) utilizing acetonitrile and 0.1% formic acid aqueous solution as mobile phases. Six sedatives were detected by using positive-ion electrospray
tandem mass spectrometry via multiple reaction monitoring(MRM) scan mode,and the samples were quantified by external standard method. The results indicated that the calibration curves of six sedatives in different feed matrix showed good linear relationships in the concentration of 0.2-50 μg/L with correlation coefficients(
r
2
) all above 0.98. The limit of detection was 0.05 mg/kg and the limit of quantitation was 0.1 mg/kg. The recoveries of six sedatives in feed ranged from 73.2% to 104% at the spiked levels of 0.1,1.0,100 mg/kg,with relative standard deviations(RSDs) of 1.0% to 11%. The method was sensitive,accurate and suitable for the simultaneous determination of six sedatives in feeds.
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Related Author
WANG Wei-li
LIN Xue-xian
LIU Zhen-ni
LIN Yi-yun
CUI Ze-feng
DING Chen-hong
WAN Kai
WANG Qi
Related Institution
Institute of Quality Standard and Monitoring Technology for Agro-products of Guangdong Academy of Agricultural Sciences,Guangzhou
Key Laboratory of Testing and Evaluation for Agro-products Safety and Quality,Ministry of Agriculture and Rural Affairs,Guangzhou
Guangdong Provincial Key Laboratory of Quality & Safety Risk Assessment for Agro-products,Guangzhou