Analytical and Bioanalytical Chemistry

, Volume 397, Issue 1, pp 269–275 | Cite as

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

  • Manuela HaunschmidtEmail author
  • Christian W. Klampfl
  • Wolfgang Buchberger
  • Robert Hertsens
Original Paper


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 from locations with typical leisure activities were analyzed. Results obtained with the developed DART-MS method were cross-checked by confirmatory analysis using thermodesorption gas chromatography mass spectrometry (TD-GC-MS). Thereby, it could be demonstrated that both analytical methods provide comparable concentrations for the UV filters in the lake water samples.


DART-MS measurement of UV filters enriched by stir bar sorptive extraction.


Eusolex Sunscreen agents Water analysis DART mass spectrometry 



The authors gratefully acknowledge JEOL (Europe) BV, Zaventem, Belgium for providing the DART-AccuTOF.


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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Manuela Haunschmidt
    • 1
    Email author
  • Christian W. Klampfl
    • 1
  • Wolfgang Buchberger
    • 1
  • Robert Hertsens
    • 2
  1. 1.Institute of Analytical ChemistryJohannes-Kepler-UniversityLinzAustria
  2. 2.JEOL (Europe) BVZaventemBelgium

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