Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1217, Issue 43, Pages 6747-6753Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2010.06.004
Keywords
UV filters; Musks; Solid-phase microextraction (SPME); Gas chromatography-mass spectrometry (GC-MS); Matrix effect
Funding
- National Natural Science Foundation of China (NSFC) [40601090, 20977116]
- Guangdong Provincial Natural Science Foundation of China [9151027501000114]
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A simple. precise and accurate method for the simultaneous determination of four UV filters and five polycyclic musks (PCMs) in aqueous samples was developed by solid-phase microextraction coupled with gas chromatography-mass spectrometry (SPME-GC-MS). The operating conditions affecting the performance of SPME-GC-MS, including fiber thickness, desorption time. pH. salinity, extraction time and temperature have been carefully studied. Under optimum conditions (30 mu m PDMS fiber, 7 min desorption time. pH 7, 10% NaCl, 90 min extraction time at 24 degrees C). the correlation coefficients (r(2)) of the calibration curves of target compounds ranged from 0.9993 to 0.9999 The limit of detection CLOD) and limit of quantification (LOQ) ranged from 0 2 to 9.6 ng L(-1) and 0.7 to 32.0 ng L(-1), respectively The developed procedure was applied to the determinations of four UV filters and five PCMs in river water samples and internal standard was used for calibration to compensate the matrix effect Good relative recoveries were obtained for spiked river water at low, medium and high levels. The proposed SPME method was compared with traditional SPE procedure and the results found in river water using both methods were in the same order of magnitude and both are quite agreeable. (C) 2010 Elsevier B.V. All rights reserved
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