Determination of organic UV filters in water by stir bar sorptive extraction and direct analysis in real-time mass spectrometry

Analytical and Bioanalytical Chemistry
Manuela HaunschmidtRobert Hertsens

Abstract

A screening method for analyzing environmental waters contaminated with UV filters using direct analysis in real-time mass spectrometry (DART-MS) was developed. To demonstrate the suitability of DART-MS a test set of seven organic UV filters, namely benzophenone-3 (BP-3), ethylhexyl dimethyl p-aminobenzoate (OD-PABA), 4-t-butyl-4'-methoxydibenzoylmethane (BM-DBM), homomethyl salicylate (HMS), 2-(ethylhexyl) salicylate (EHS), octocrylene (OC), and 4-methylbenzylidene camphor (4-MBC), was defined. In the first step, standard solutions of the analytes prepared in methanol were investigated in order to determine optimum parameters for the DART-MS. Because of the very low concentrations of UV filters expected in environmental water samples, a pre-concentration step using stir bar sorptive extraction was performed. DART-MS allows the direct, simple and rapid semi-quantitative analysis of the analytes enriched on the surface of the polydimethylsiloxane-coated stir bars. The optimized method provided calibration curves with correlation coefficients R > 0.959, repeatability from 5% (for 4-MBC) to 30% (for BM-DBM) relative standard deviation and limits of detection lower than 40 ng L(-1) for all analytes. Finally, real lake water samples...Continue Reading

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Citations

Sep 17, 2013·Analytical and Bioanalytical Chemistry·Jürgen H Gross
Jan 11, 2013·Chemical Reviews·María Eugenia MongeFacundo M Fernández
Oct 8, 2011·International Journal of Cosmetic Science·J B G JúniorV S Ferreira
Jul 19, 2011·Rapid Communications in Mass Spectrometry : RCM·Elena S ChernetsovaGertrud E Morlock
Nov 19, 2011·Rapid Communications in Mass Spectrometry : RCM·David S ChoLiguo Song
Dec 18, 2013·Mass Spectrometry Reviews·Xuelu Ding, Yixiang Duan
May 2, 2015·Journal of the American Society for Mass Spectrometry·Liya ZhangYiyang Dong
Oct 17, 2017·Analytical and Bioanalytical Chemistry·Xianjiang LiHuwei Liu
Sep 13, 2020·Rapid Communications in Mass Spectrometry : RCM·Robert Cody, Simin D Maleknia
Dec 8, 2011·Analytical Chemistry·Susan D Richardson
Apr 19, 2011·Analytical Chemistry·Glenn A HarrisFacundo M Fernández
Jun 15, 2011·Analytical Chemistry·Susan D Richardson, Thomas A Ternes

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