TY - JOUR
T1 - Inter-laboratory trials for analysis of perfluorooctanesulfonate and perfluorooctanoate in water samples
T2 - Performance and recommendations
AU - Taniyasu, Sachi
AU - Kannan, Kurunthachalam
AU - Wu, Qian
AU - Kwok, Karen Y.
AU - Yeung, Leo W.Y.
AU - Lam, Paul K.S.
AU - Chittim, Brock
AU - Kida, Takafumi
AU - Takasuga, Takumi
AU - Tsuchiya, Yoshiteru
AU - Yamashita, Nobuyoshi
N1 - Funding Information:
We thank to all expert member of ISO/TC147/SC2/WG56, participants and supporters to the inter-laboratory trial for ISO 25101 and JIS K 0450-70-10. We thank to the Japan Environmental Management Association for Industry, the Japan Environmental Measurement & Chemical Analysis Association and all participants to carry out JIS-2008 and JIS-2009. Part of this study was funded by the Ministry of the Environment (project no. B-1106) and the Japan Society for the Promotion of Science (project no. 23710032).
PY - 2013/4/3
Y1 - 2013/4/3
N2 - 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.
AB - 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.
KW - HPLC-MS/MS, ISO
KW - Inter-laboratory trial
KW - PFOS
KW - Perfluoroalkyl substances
KW - Water
UR - https://www.scopus.com/pages/publications/84874976205
U2 - 10.1016/j.aca.2013.01.056
DO - 10.1016/j.aca.2013.01.056
M3 - Article
C2 - 23498693
AN - SCOPUS:84874976205
SN - 0003-2670
VL - 770
SP - 111
EP - 120
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
ER -