ばいじん中ダイオキシン類分析用標準物質JSAC 0511, JSAC 0512の開発

The Japan Society for Analytical Chemistry has developed two new certified reference materials (CRMs) for analyses of dioxins (polychlorodibenzo-p-dioxins and polychlorodibenzofurans) and coplanar polychlorobiphenyls. A project team was organized to prepare two kinds of combustion dust and to certify the concentration of dioxins and polychlorobiphenyls. An interlaboratory comparison test was performed by participants from 23 laboratories. In a statistical analysis, z scores in a robust method were applied to reject outliers, followed by the usual statistical procedure. The presented CRMs are expected to be useful for the quality assurance and the quality control of dioxins analysis.