为了消除黄金饰品检测中金基体抑制效应和干扰作用,提高测试效率,将钌、钯、铱、铂的单元素标准溶液配制成多元素混合标准溶液,将其加入到配好的高纯金基体溶液中混匀定容配制成含金体系标准溶液系列.采用电感耦合等离子体原子发射光谱法(ICP-AES)测试该混合标准溶液的稳定性,稳定性检验时间为12个月.结果显示,不同日期该混合标准溶液系列的校准曲线回归方程相关系数均大于0.999;t检验结果表明含金体系中钌、钯、铱、铂混合标准溶液在12个月内浓度无显著性变化;15~30℃避光条件下可以稳定储存.
In order to eliminate the inhibitory effect and interference suppression of gold matrix in gold ac-cessories detection as well as to improve the testing efficiency ,the single element standard solution of Ru , Pd ,Ir and Pt should be mixed to prepare multi-element standard solution ,which was then added into high-purity gold matrix solution to prepare standard solution series .The stability of this mixed standard solu-tion was tested by inductively coupled plasma atomic emission spectrometry (ICP-AES) .The testing peri-od was 12 month .The results showed that the correlation coefficients of calibration curves at different sta-ges were higher than 0 .999 .The t test results also indicated that the concentration of Ru ,Pd ,Ir and Pt in gold system had no significant changes within a year .The prepared mixed standard solution could be stably kept for long term in darkness at 15-30 ℃ .
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