PMID- 31642279 OWN - NLM STAT- MEDLINE DCOM- 20191028 LR - 20200108 IS - 1872-2059 (Electronic) IS - 1000-8713 (Linking) VI - 37 IP - 11 DP - 2019 Nov 8 TI - [Rapid screening and confirmation of 20 mycotoxins in grain products by ultrahigh performance liquid chromatography- quadrupole/electrostatic field orbitrap high- resolution mass spectrometry]. PG - 1241-1248 LID - 10.3724/SP.J.1123.2019.03041 [doi] AB - A rapid method based on ultrahigh-performance liquid chromatography-quadrupole/electrostatic field orbitrap high-resolution mass spectrometry (UPLC-HRMS) was developed for the screening and confirmation of 20 mycotoxins in grain products. The samples were extracted with acetonitrile containing 2% (v/v) formic acid, and the extracts were cleaned up on Captive EMR-Lipid columns. The analytes were separated on a Thermo Hypersil Gold C(18) column (100 mmx2.1 mm, 1.9 mum), and analyzed by UPLC-HRMS. The retention time and accurate mass of the parent ion were used for fast screening in full scan mode, while the accurate masses of the fragment ions were used for confirmation in the two-stage threshold-triggered full mass scan mode. The results revealed that the 20 mycotoxins showed good linear relationships in their respective mass concentration ranges. The correlation coefficients were not less than 0.99, and the limits of quantitation (LOQs) ranged from 0.25 to 20 mug/kg. The recoveries of the 20 mycotoxins in the sample ranged from 72.9% to 117.8% with the relative standard deviations (RSDs) from 2.9% to 15.2% at three spiked levels (n=6). This method has the advantages of high sensitivity and reliability, and is thus suitable for the rapid screening and confirmation of 20 mycotoxins in grain products. FAU - Hu, Qiaoru AU - Hu Q AD - Yantai Customs Technology Center, Yantai 264000, China. FAU - Cao, Peng AU - Cao P AD - Yantai Customs Technology Center, Yantai 264000, China. FAU - Cong, Zhongxiao AU - Cong Z AD - Yantai Customs Technology Center, Yantai 264000, China. FAU - Liang, Junni AU - Liang J AD - Yantai Customs Technology Center, Yantai 264000, China. FAU - Sha, Meilan AU - Sha M AD - Yantai Customs Technology Center, Yantai 264000, China. FAU - Li, Xiaoyu AU - Li X AD - Yantai Customs Technology Center, Yantai 264000, China. FAU - Yin, Dalu AU - Yin D AD - Yantai Customs Technology Center, Yantai 264000, China. FAU - Lu, Min AU - Lu M AD - Yantai Customs Technology Center, Yantai 264000, China. LA - chi PT - Journal Article PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 0 (Mycotoxins) SB - IM MH - Chromatography, High Pressure Liquid MH - Edible Grain/*chemistry/microbiology MH - Mass Spectrometry MH - Mycotoxins/*analysis MH - Reproducibility of Results OTO - NOTNLM OT - confirmation OT - grain OT - high-resolution mass spectrometry (HRMS) OT - mycotoxins OT - rapid screening OT - ultrahigh performance liquid chromatography (UPLC) EDAT- 2019/10/24 06:00 MHDA- 2019/10/29 06:00 CRDT- 2019/10/24 06:00 PHST- 2019/10/24 06:00 [entrez] PHST- 2019/10/24 06:00 [pubmed] PHST- 2019/10/29 06:00 [medline] AID - 10.3724/SP.J.1123.2019.03041 [doi] PST - ppublish SO - Se Pu. 2019 Nov 8;37(11):1241-1248. doi: 10.3724/SP.J.1123.2019.03041.