Enhancing sensitivity of liquid chromatographic/ion-trap tandem mass spectrometric determination of estrogens by on-line pre-column derivatization

被引:30
作者
Matejicek, David [1 ]
Kuban, Vlastimil [1 ]
机构
[1] Mendel Univ Brno, Dept Chem & Biochem, CZ-61300 Brno, Czech Republic
关键词
estrogens; derivatization; liquid chromatography; ion-trap MS/MS; water;
D O I
10.1016/j.chroma.2008.03.061
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A rapid and sensitive liquid chromatographic/ion-trap mass spectrometric method has been developed for the simultaneous determination of estriol, alpha-, beta-estradiol, 17 alpha-ethynylestradiol and estrone The sub. stances were extracted from river water samples (typically 250 ml) and cleaned-up using two-stage solid-phase extraction (SPE). 12-(Difluoro-1,3,5-triazinyl)-benz[f]isoindolo-[1,2b][1,3]benzothiazolidine was applied as a derivatizing agent. The recovery for each compounds ranged from 75 to 88% and the repeatability represented as RSDs ranged from 5.6 to 8.4%. Limits of detection (LOD, 3 x S/N) were 67-285 pg/l. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:248 / 253
页数:6
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