有害金属成分の蛍光X線分析用プラスチック認証標準物質JSAC0611〜0615の開発

概要

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The Japan Society for Analytical Chemistry has developed a series of certified reference materials (CRMs) for X-ray fluorescence analysis of hazardous elements (Pb, Cd, Cr) in plastics. These CRMs (named as JSAC 0611〜0615) were prepared by the casting of polyester including a toluene solution of organometallic compounds as a standard. The prepared disk had a homogeneous elemental distribution and excellent durability. Concentrations of the three trace elements were ranged from 0 to 200mg/kg for Pb, 0 to 50mg/kg for Cd, and 0 to 200mg/kg for Cr. An interlaboratory study was performed by 21 laboratory's participants. The z-scores in robust method were applied to statistical analysis. The certified uncertainties were determinant in the confidence levels of 95%. These presented CRMs are expected to be useful for the screening analysis and the precise analysis of hazardous elements in plastics.
2006-07-05