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Trace analysis of mono-, di-, tri-substituted polyfluoroalkyl phosphates and perfluorinated phosphonic acids in sewage sludge by high performance liquid chromatography tandem mass spectrometry
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.ORCID iD: 0000-0002-5729-1908
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
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2013 (English)In: Talanta: The International Journal of Pure and Applied Analytical Chemistry, ISSN 0039-9140, E-ISSN 1873-3573, Vol. 111, p. 170-177Article in journal (Refereed) Published
Abstract [en]

A new method using ultrasonic extraction and solid phase extraction (SPE) clean-up pretreatments was developed for the analysis of mono-, di- and tri-substituted polyfluoroalkyl phosphates (abbreviated as mono-PAPs, di-PAPs and tri-PAPs) and perfluorinated phosphonic acids (PFPAs) in sludge from wastewater treatment plants (WWTPs). For the ultrasonic extraction of three mono-PAPs, three di-PAPs and three PFPAs in sludge samples, a mixture of tetrahydrofuran/acetic acid (1:1, v/v) was found to be the most suitable extraction solvent. The subsequently optimized clean-up and enrichment procedures were carried out with weak anion exchange (WAX) cartridges in-line coupled with graphitized carbon black (ENVI-Carb) tubes. Two tri-PAPs were ultrasonically extracted by acetonitrile/tetrahydrofuran (1:1, v/v) and cleaned by mixed-mode anion exchange (MAX) in-line coupled with ENVI-Carb cartridges. The analytes were analyzed by optimized high performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS) method either in negative or positive ionization mode. The method quantification limits (MQLs) of the 11 analytes in sludge ranged from 0.6 to 5.1 ng/g, meanwhile the total recoveries of the pretreatment varied from 24% (6:2 mono-PAP) to 107% (PFDPA). The method was successfully applied to analyze 16 sewage sludge samples collected from seven provinces in China, and two mono-PAPs were identified with concentrations ranging from <MQLs to 10.7 ng/g.

Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 111, p. 170-177
Keywords [en]
Polyfluoroalkyl phosphates, Perfluorinated phosphonic acids, Ultrasonic extraction, Solid phase extraction, Sewage sludge
National Category
Analytical Chemistry Environmental Sciences
Identifiers
URN: urn:nbn:se:oru:diva-38414DOI: 10.1016/j.talanta.2013.02.063ISI: 000319089300024PubMedID: 23622541Scopus ID: 2-s2.0-84891402987OAI: oai:DiVA.org:oru-38414DiVA, id: diva2:765020
Note

Sponsors:

National Natural Science Foundation Grant(s): 21207140  20890110  20621703  21177147 

National Basic Research Program of China Grant(s): 2009CB421605 

Chinese Academy of Sciences Grant(s): GJHZ1202 

Available from: 2014-11-21 Created: 2014-11-07 Last updated: 2018-05-22Bibliographically approved

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Wang, Thanh

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