PMID- 29048815 OWN - NLM STAT- MEDLINE DCOM- 20181109 LR - 20181109 IS - 1000-8713 (Print) IS - 1000-8713 (Linking) VI - 35 IP - 8 DP - 2017 Aug 8 TI - [Simultaneous rapid determination of 81 glucocorticoids in cosmetics by dispersive solid phase extraction and liquid chromatography-tandem mass spectrometry]. PG - 816-825 LID - 10.3724/SP.J.1123.2017.04005 [doi] AB - A novel method was developed for the simultaneous rapid determination of 81 illegally added glucocorticoids (GCs) in cosmetics using dispersive-solid phase extraction (d-SPE) and liquid chromatography-tandem mass spectrometry (LC-MS/MS). The analytes were extracted by acetonitrile after dispersing with water, and then purified using the C(18) and primary secondary amine (PSA). The chromatographic separations were performed on a Poroshell 120 PFP column (100 mmx2.1 mm, 2.7 mu m) under multiple chromatographic retention modes. Acetonitrile and 0.2% (v/v) acetic acid aqueous solution were used as mobile phases with gradient elution, and all the 10 groups of isomers were baseline separated. The qualitative identification and quantitative analysis of the 81 GCs were operated in the electrospray ionization positive mode using dynamic multiple reaction monitoring (DMRM). The 81 GCs finally were quantified by internal standard method. The correlation coefficients of linear calibration curves were greater than 0.99 in the corresponding mass concentration ranges. The average recoveries of the 81 GCs at three spiked levels ranged from 68.8% to 105.3% with relative standard deviations (RSDs) of 2.9%-13.1% (n=6). The LODs (S/N >/= 3) and LOQs (S/N >/= 10) were 0.002-0.006 mu g/g and 0.005-0.020 mu g/g, respectively. A number of 137 cosmetic samples submitted by customers were screened. Sixteen positive samples were found, and the contents of GCs were from 16.9 mu g/g to 158 mu g/g. The results showed that the new method is simple, rapid, sensitive and reliable, and it is suitable for qualitative and quantitative screening analysis of the 81 GCs in cosmetics simultaneously. FAU - Luo, Huitai AU - Luo H AD - Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, China National Analytical Center(Guangzhou), Guangzhou 510070, China. FAU - Huang, Xiaolan AU - Huang X AD - Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, China National Analytical Center(Guangzhou), Guangzhou 510070, China. wenhxl@126.com. FAU - Wu, Huiqin AU - Wu H AD - Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, China National Analytical Center(Guangzhou), Guangzhou 510070, China. FAU - Zhang, Qiuyan AU - Zhang Q AD - Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, China National Analytical Center(Guangzhou), Guangzhou 510070, China. FAU - Zhu, Zhixin AU - Zhu Z AD - Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, China National Analytical Center(Guangzhou), Guangzhou 510070, China. FAU - Huang, Fang AU - Huang F AD - Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, China National Analytical Center(Guangzhou), Guangzhou 510070, China. FAU - Lin, Xiaoshan AU - Lin X AD - Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, China National Analytical Center(Guangzhou), Guangzhou 510070, China. FAU - Ma, Yefen AU - Ma Y AD - Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, China National Analytical Center(Guangzhou), Guangzhou 510070, China. FAU - Deng, Xin AU - Deng X AD - Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, China National Analytical Center(Guangzhou), Guangzhou 510070, China. LA - chi PT - Journal Article PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 0 (Cosmetics) RN - 0 (Glucocorticoids) SB - IM MH - Chromatography, High Pressure Liquid MH - *Chromatography, Liquid MH - Cosmetics/*chemistry MH - Glucocorticoids/*analysis MH - Limit of Detection MH - Solid Phase Extraction MH - *Tandem Mass Spectrometry OTO - NOTNLM OT - cosmetics OT - dispersive-solid phase extraction (d-SPE) OT - glucocorticoids (GCs) OT - illegally added OT - isotope dilution OT - liquid chromatography-tandem mass spectrometry (LC-MS/MS) EDAT- 2017/10/20 06:00 MHDA- 2018/11/10 06:00 CRDT- 2017/10/20 06:00 PHST- 2017/10/20 06:00 [entrez] PHST- 2017/10/20 06:00 [pubmed] PHST- 2018/11/10 06:00 [medline] AID - 10.3724/SP.J.1123.2017.04005 [doi] PST - ppublish SO - Se Pu. 2017 Aug 8;35(8):816-825. doi: 10.3724/SP.J.1123.2017.04005.