@article {114,
	title = {Derivatization method for sensitive determination of fluorotelomer alcohols in sediment by liquid chromatography-electrospray tandem mass spectrometry.},
	journal = {J Chromatogr A},
	volume = {1288},
	year = {2013},
	month = {2013 May 03},
	pages = {48-53},
	abstract = {<p>Fluorotelomer alcohols (FTOHs) are the main precursors of environmentally ubiquitous perfluorinated acids, and determination of FTOHs at low concentrations presents significant challenges. In this study, a new liquid chromatography-electrospray mass spectrometry (LC-ESI-MS) method in conjunction with low-energy collision dissociation tandem mass spectrometry (CID-MS/MS) was developed by employing an optimized derivatization reaction with dansyl chloride (DNS) in acetonitrile under catalysis of 4-(dimethylamino)-pyridine (DMAP). The instrument detection limits (IDLs) of the newly developed method were 0.014, 0.015, 0.014, 0.0075 and 0.0093μg/L for 4:2 FTOH, 6:2 FTOH, 8:2 FTOH, 10:1 FTOH and 10:2 FTOH respectively, which were 7.5-241 times lower than those without derivatizaiton and 57-357 times lower than previous GC/MS method. The method was successfully applied to analyze FTOHs in sediments combined with WAX and silica cartridges cleanup. The overall method recoveries were from 67{\textpm}6.0\% to 83{\textpm}9.4\% with matrix effects of \&lt;15\%. The limits of quantification for all FTOHs were 0.017-0.060ng/gdry weight (dw). The method was applied to analyze six marine sediment samples from Liaodong Bay, China. All FTOHs except for 10:1 FTOH were detected, and the total concentrations of FTOHs were 0.19-0.52ng/gdw. The developed method provides a new method to sensitively determine FTOHs in environmental matrices.</p>},
	keywords = {Alcohols, China, Chromatography, High Pressure Liquid, Environmental Pollutants, Fluorocarbons, Geologic Sediments, Reproducibility of Results, Sensitivity and Specificity, Spectrometry, Mass, Electrospray Ionization, Tandem Mass Spectrometry},
	issn = {1873-3778},
	doi = {10.1016/j.chroma.2013.02.085},
	author = {Peng, Hui and Hu, Kejun and Zhao, Fanrong and Hu, Jianying}
}
@article {116,
	title = {Simultaneous determination of mono- and disubstituted polyfluoroalkyl phosphates in drinking water by liquid chromatography-electrospray tandem mass spectrometry.},
	journal = {J Chromatogr A},
	volume = {1227},
	year = {2012},
	month = {2012 Mar 02},
	pages = {245-52},
	abstract = {<p>A sensitive liquid chromatography-electrospray tandem mass spectrometry method was established for the simultaneous determination of five monosubstituted polyfluoroalkyl phosphates (monoPAPs) and eight disubstituted polyfluoroalkyl phosphates (diPAPs) in drinking water. Complete separation and good retention for 13 polyfluoroalkyls phosphates (PAPs) were achieved with a Waters ACUITY UPLC BEH C8 column using a mixture of methanol/water containing 0.1\% NH$_{4}$OH as the mobile phases. Extraction of drinking water samples was performed on weak anion exchange (WAX) cartridges, and the recoveries of target compounds were from 65 to 110\%. The limits of quantization (LOQs) for 13 analytes were in the range of 0.4-40 ng/L. This method was applied to analyze the PAPs in drinking water samples from three cities in China. Of the 13 PAPs, six PAPs including 6:2 monoPAP (13.0 ng/L), 8:2 monoPAP (3.6 ng/L), 10:1 monoPAP (4.3-70.3 ng/L), 10:2 monoPAP (1.4-5.6 ng/L), 8:2 diPAP (0.10 ng/L), and 10:1 diPAP (0.8-3.8 ng/L) were detected.</p>},
	keywords = {China, Chromatography, Ion Exchange, Drinking Water, Fluorocarbons, Phosphates, Reproducibility of Results, Sensitivity and Specificity, Solid Phase Extraction, Tandem Mass Spectrometry, Water Pollutants, Chemical},
	issn = {1873-3778},
	doi = {10.1016/j.chroma.2012.01.004},
	author = {Ding, Huanhuan and Peng, Hui and Yang, Min and Hu, Jianying}
}
