期刊
TALANTA
卷 85, 期 5, 页码 2397-2404出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2011.07.081
关键词
Phenols; Wastewater; Gas chromatography-mass spectrometry (GC-MS); Standard addition calibration; Matrix-matched calibration
资金
- Andalusian Regional Government (Regional Ministry of Innovation, Science, and Enterprise-FEDER) [P08-RNM-03892]
- Spanish Ministry of Science and Innovation-European Social Fund
- Spanish Ministry of Science and Innovation
An analytical methodology has been developed for the simultaneous extraction of 13 phenolic compounds, including chlorophenols (CPS). nitrophenols (NTPs), cresols and alkylphenols (APs) in different types of wastewater (WW) effluents. A solid-phase extraction (SPE) method has been optimized prior to the determination by gas chromatography coupled to triple quadrupole tandem mass spectrometry (GC-QqQ-MS/MS). Due to the complexity of the matrix, a comparison study of matrix-matched-calibration (MMC) and standard addition calibration (SAC) was carried out for quantification purposes. The optimized procedure was validated using the SAC approach since it provided the most adequate quantification results (in terms of recovery and precision values). Recoveries were in the range 60-135% (0.5 mu g L-1), 70-115% (1 mu g L-1), and 78-120% (5 mu g L-1), with precision values (expressed as relative standard deviation, RSD) <= 30% (except for 2-nitrophenol) involving intra-day and inter-day precision studies. Limits of detection (LODs) and quantification (LOQs) were also evaluated, and LOQs ranged from 0.03 mu g L-1 to 2.5 mu g L-1. The proposed method was applied to the analysis of 8 real WW effluent samples, finding some phenolic compounds (e.g. 2-chlorophenol, 2,4,6-trichlorophenol and 4-tert-octylphenol) at concentrations higher than the established LOQs. (C)2011 Elsevier B.V. All rights reserved.
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