含氮铸铁光谱分析标准物质的研制

DEVELOPMENT OF CERTIFIED REFERENCE MATERIALS OF NITROGEN CAST IRON FOR SPECTRUM ANALYSIS

介绍一套含氮铸铁光谱分析标准物质的研制过程。结果表明,采用独特铸造工艺研制的该套含氮铸铁光谱分析标准物质具有良好的均匀性、成线性和稳定性,由9家实验室协同定值,确定了C、Si、Mn、P、S、Cr、Ni、Cu、V、Ti、Mo、Mg、Al、La、Sn、Ce、N等17种元素的标准值及其不确定度,定值准确、可靠。

The developing process of a suit of certified reference materials of nitrogen cast iron for spectrum analysis was in- troduced. The results showed that the homogeneity, linearity and stability of the suit of certified reference materials of nitrogen cast iron for spectrum analysis developed by the unique cast technique were good. The certification was conducted by the cooperation of 9 laboratories, the certified values and uncertainties of C, Si, Mn, P, S, Cr, Ni, Cu, V, Ti, Mo, Mg, Al, La, Sn, Ce and N were confirmed. The certification is accurate and reliable.