期刊
TALANTA
卷 120, 期 -, 页码 30-33出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2013.11.088
关键词
Water monitoring; Polar organic chemical integrative sampler (POCIS); Polar organic micropollutant; Sampling rate; Time-Weighted Average concentration (TWA)
A calibration system for POCIS was developed and used to calculate the sampling rates of eight analytes belonging to pesticides, non-steroidal anti-inflammatory drugs and perfluorinated compounds: atrazine, propazine, terbutylazine, diclofenac, ibuprofen, ketoprofen, perfluorooctanoic acid and perfluorooctanesulfonate. Experiments with a linear velocity of 2.0, 5.1, 10.2 and 15.3 cm/s were carried out for 96 h using two different analyte concentrations. POCIS extracts were analyzed by liquid chromatography-tandem mass spectrometry (LC-MS/MS), using multiple reaction monitoring to maximize sensitivity. Results highlighted that the calculated sampling rates are rather constant at the considered concentrations and flow rates. Obtained values of sampling rates were then employed to calculate Time-Weighted Average concentration of the analytes in river and drinking waters. (C) 2013 Elsevier B.V. All rights reserved.
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