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Inter-laboratory trials for analysis of perfluorooctanesulfonate and perfluorooctanoate in water samples: Performance and recommendations
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan.
Wadsworth Center, New York State Department of Health, School of Public Health, State University of New York, Albany NY, United States.
Wadsworth Center, New York State Department of Health, Department of Environmental Health Sciences, School of Public Health, State University of New York NY, USA.
Department of Biology and Chemistry, City University of Hong Kong, Hong Kong, China.
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2013 (English)In: Analytica Chimica Acta, ISSN 0003-2670, E-ISSN 1873-4324, Vol. 770, p. 111-120Article in journal (Refereed) Published
Resource type
Text
Abstract [en]

The ISO 25101 (International Organization for Standardization, Geneva) describes a new international standard method for the determination of perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) in unfiltered samples of drinking and surface waters. The method is based on the extraction of target analytes by solid phase extraction, solvent elution, and determination by high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). For the determination of the performance of this method, more than 20 laboratories from 9 different countries participated in an inter-laboratory trial in 2006. In addition, inter-laboratory trials were conducted in 2008 and 2009 for the analysis of perfluoroalkylsubstances (PFASs), including PFOS and PFOA, in water samples by following the protocols of Japanese Industrial Standard (JIS). Overall, the repeatability coefficients of variation (i.e., within-laboratory precision) for PFOS and PFOA in all water samples were between 3 and 11%, showing a adequate precision of the ISO and JIS methods. The reproducibility coefficients of variation (i.e., between-laboratory precision) were found to vary within a range of 7-31% for surface water and 20-40% for wastewater. The recoveries of PFOS and PFOA, as a measure of accuracy, varied from 84 to 100% for surface water and from 84 to 100% for wastewater among the samples with acceptable criteria for internal standards recovery. The determined concentrations of PFASs in samples compared well with the " true" values. The results of the inter-laboratory trial confirmed that the analytical methods are robust and reliable and can be used as a standard method for the analysis of target compounds in water samples.

Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 770, p. 111-120
Keywords [en]
HPLC-MS/MS, ISO; Inter-laboratory trial; Perfluoroalkyl substances; PFOS; Water
National Category
Environmental Sciences Chemical Sciences
Research subject
Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-49971DOI: 10.1016/j.aca.2013.01.056ISI: 000317252900014PubMedID: 23498693Scopus ID: 2-s2.0-84874976205OAI: oai:DiVA.org:oru-49971DiVA, id: diva2:950432
Note

Funding Agencies:

Ministry of the Environment B-1106

Japan Society for the Promotion of Science 23710032

Available from: 2016-07-29 Created: 2016-04-28 Last updated: 2018-09-14Bibliographically approved

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Yeung, Leo W. Y.Lam, Paul K. S.

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