PMID- 24392631 OWN - NLM STAT- MEDLINE DCOM- 20150708 LR - 20190923 IS - 1000-8713 (Print) IS - 1000-8713 (Linking) VI - 31 IP - 9 DP - 2013 Sep TI - [Determination of environmental estrogens in cow feed and soil by high performance liquid chromatography-tandem mass spectrometry]. PG - 908-13 AB - An analytical method was developed for the determination of the residues of five environmental estrogens, including estriol, estradiol, estrone, bisphenol A and diethylstilbestrol, in the cow feed and soil by solid phase extraction (SPE) and high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The important parameters which affect the determination efficiency such as the mobile phase, the condition of mass spectrometry and solid phase extraction column were optimized. The optimal determination conditions were as follows: the sample was extracted with acetonitrile at first, then cleaned-up with an NH2-SPE column, and an Acquity UPLC HSS T3 column was selected to separate the analytes. Acetonitrile-methanol (4: 1, v/v) and 0.01% ammonia aqueous solution were used as the mobile phase by gradient elution in the negative mode. The limits of detection (LOD, S/N = 3) were 0.06 - 0.22 microg/kg. The overall recoveries varied from 81.70% to 102.20%, and the relative standard deviations (RSDs) were all less than 10.00%. This method is simple, sensitive and accurate, and suitable for the determination of environmental estrogens in cow feed and soil. FAU - Li, Xue AU - Li X AD - College of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China. FAU - Mu, Guangqing AU - Mu G AD - College of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China. FAU - Chen, Lijun AU - Chen L AD - College of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China. FAU - Jiang, Tiemin AU - Jiang T AD - Beijing Sanyuan Foods Co., Ltd., Beijing 100076, China. LA - chi PT - Journal Article PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 0 (Benzhydryl Compounds) RN - 0 (Estrogens) RN - 0 (Phenols) RN - 0 (Soil) RN - 2DI9HA706A (Estrone) RN - 4TI98Z838E (Estradiol) RN - 731DCA35BT (Diethylstilbestrol) RN - FB33469R8E (Estriol) RN - MLT3645I99 (bisphenol A) SB - IM MH - Animal Feed/*analysis MH - Animals MH - Benzhydryl Compounds MH - Cattle MH - *Chromatography, High Pressure Liquid MH - Diethylstilbestrol MH - Estradiol MH - Estriol MH - Estrogens/*analysis MH - Estrone MH - Phenols MH - Soil/*chemistry MH - Solid Phase Extraction MH - *Tandem Mass Spectrometry EDAT- 2014/01/08 06:00 MHDA- 2015/07/15 06:00 CRDT- 2014/01/08 06:00 PHST- 2014/01/08 06:00 [entrez] PHST- 2014/01/08 06:00 [pubmed] PHST- 2015/07/15 06:00 [medline] AID - 10.3724/sp.j.1123.2013.02033 [doi] PST - ppublish SO - Se Pu. 2013 Sep;31(9):908-13. doi: 10.3724/sp.j.1123.2013.02033.