Journal
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
Volume 53, Issue 14, Pages 1277-1283Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10934529.2018.1528042
Keywords
Perfluorinated alkylated substances; water samples; suspended particle samples; ultra-performance liquid chromatography/tandem mass spectrometry; solid phase extraction; dispersive solid phase extraction; determination
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Funding
- National Science and Technology Infrastructure Work Project of China [2014FY230100]
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A practical multi-residue method based on ultra-performance liquid chromatography/tandem mass spectrometry was developed for the simultaneous determination of 23 perfluorinated alkylated substances (PFASs) in water and suspended particles. Suspended particle samples were extracted with 1% formic acid-acetonitrile and cleaned by matrix solid phase dispersion extraction using a C-18 sorbent and graphitized carbon black. Water samples were filtered through 0.7-mu m glass fiber membranes and enriched utilizing weak anion exchange cartridges. The eluent was dried under a gentle stream of N-2 at 45 degrees C and suspended in 1 mL acetonitrile-5 mM ammonium acetate (1:1, vol:vol). Gradient elution for chromatographic separation utilized acetonitrile and 5 mM ammonium acetate as mobile phases on a reverse phase C-18 column. The compounds were quantified using an internal standard method in multiple reaction-monitoring mode. Limits of detection and quantitation of the 23 PFAS test compounds in water samples were 0.5-10 ng L-1 and 2-20 ng L-1, respectively. Recoveries at three fortified levels of 20, 50, and 200 ng L-1 ranged from 68.5% to 118% with relative standard deviations below 9.6%. We used this method to determine PFAS levels in real water and suspended particle samples and found high sensitivity and good reproducibility.
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