抄録
The Japan Society for Analytical Chemistry has developed two new certified reference materials (CRMs) for the analysis of residual amounts of simazine and dieldrin in field soils. A study team has been organized to prepare 2 kinds of field soils by blending loan soil that contains simazine and former farmland soil that contains dieldrin. An interlaboratory comparison test, in which 22 laboraotries participated, was carried out. In a statistical analysis of all data, z-scores in robust method were applied to reject outliers, followed by the usual statistical procedure. The presented CRMs are expected to be useful for quality assurance and quality control in the analysis of residual pesticide in soils.
