期刊
TALANTA
卷 85, 期 4, 页码 1848-1855出版社
ELSEVIER
DOI: 10.1016/j.talanta.2011.07.030
关键词
Benzophenone; Liquid chromatography-tandem mass spectrometry (LC-MS/MS); Human placental tissue analysis
资金
- Instituto de Salud Carlos III [Red INMA G03/176, CB06/02/0041]
- EU Commission [CONTAMED FP7-ENV-212502]
- Roger Tome Foundation
- Ministry of Science and Innovation of the Regional Government of Andalusia, Spain [P09-CTS-4470, P09-CTS-5488]
Benzophenones (BPS) are a family of compounds widely used to protect the skin and hair from UV irradiation. Despite human exposure to BPs through dermal application of products containing sunscreen agents and the increasing evidence that BPs are able to interfere with endocrine systems, few studies have examined the occurrence of BPs in humans. In this work, we propose a new liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to determine six BPs, namely. benzophenone-1 (BP-1), benzophenone-2 (BP-2), benzophenone-3 (BP-3). benzophenone-6 (BP-6), benzophenone-8 (BP-8) and 4-hydroxybenzophenone (4-0H-BP) in human placental tissue samples. The method involves an extraction step of the analytes from the samples using ethyl acetate, followed by a clean-up step using centrifugation prior to their quantification by LC-MS/MS using an atmospheric pressure chemical ionization (APCI) interface in the positive mode. Benzophenone-d(10) (BR-d(10)) was used as surrogate. Found detection limits (LOD) ranged from 0.07 to 0.3 ngg(-1) and quantification limits (LOQ) from 0.3 to 1.0 ngg(-1), while inter- and intra-day variability was under 5%. The method was validated using standard addition calibration and a recovery assay. Recovery rates for spiked samples ranged from 98 to 104%. This method was satisfactorily applied for the determination of BPs in 16 placental tissue samples collected from women who live in Granada (Spain). (C) 2011 Elsevier B.V. All rights reserved.
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