期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1217, 期 34, 页码 5462-5469出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2010.06.060
关键词
Polycyclic aromatic hydrocarbons (PAHs); Solid-phase extraction (SPE); Multi-walled carbon nanotubes (MWCNTs); Gas chromatography-mass spectrometry (GC-MS); Water samples
资金
- Ministry of Water Resources Public Welfare Specialized Research Foundation of China [200901063]
- Education Commission Natural Science Foundation of Shandong Province [J07WZ05]
- Qingdao Technological University [c2007-008]
- Water Body Pollution Controlling and Treatment Significant Special Project Foundation of China Science and Technology [2009ZX07317-008-02]
- Department of Science and Technology of Shandong Province of China [2008GG20005005]
- CAS/SAFEA International Partnership Program for Creative Research Teams
- Chinese Academy of Sciences
A solid-phase extraction (SPE) using multi-walled carbon nanotubes (MWCNTs) as adsorbent coupled with gas chromatography-mass spectrometry (GC-MS) method was developed for the determination of 16 polycyclic aromatic hydrocarbons (PAHs) in environmental water samples. Several condition parameters, such as extraction adsorbents, elution solvents and volumes, and sample loading flow rate and volume were optimized to obtain high SPE recoveries and extraction efficiency. 150 mg MWCNTs as sorbent presented high extraction efficiency of 16 PAHs due to the large specific surface area and high adsorption capacity of MWCNTs compared with the commercial C18 column (250 mg/2 mL). The calibration curves of 16 PAHs extracted were linear in the range of 20-5000 ng L(-1), with the correlation coefficients (r(2)) between 0.9848 and 0.9991. The method attained good precisions (relative standard deviation, RSD) from 1.2% to 12.1% for standard PAHs aqueous solutions; method recoveries ranged in 76.0-125.5%, 74.5-127.0%, and 70.0-122.0% for real spiked samples from river water, tap water and seawater, respectively. Limits of detection (LODs, S/N = 3) of the method were determined from 2.0 to 8.5 ng L(-1). The optimized method was successfully applied to the determination of 16 PAHs in real environmental water samples. (C) 2010 Elsevier B.V. All rights reserved.
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