The standard talc sample was fused with Na2CO3 and Na2B4O7 and then the fused disc was dissolved with HCl solution. SiO2,MgO,Al2O3,Fe3O2 and CaO in talc samples were determined simultaneously by ICP-AES. The optimum analytical line with high sensitivity and low spectral interference were carefully chosen. The sources and properties of the interference were discussed. The recoveries. for these elements were 98.8%-104.4%, with precision of 0.12%-2.4% RSD (n = 6). The results of major and minor components in talc samples by this method were in agreement with those provided by the standard method.

据专家认为,儿童缺锌与缺钙是同时存在的,儿童发锌、钙的测试在国内已常见报导.我中心实验室从1989年至今一直从事新生儿、婴幼儿、儿童发中钙、锌以及其他一些微量元素的测试,对1990年到1999年大连地区3～6岁正常儿童发中锌、钙含量的变化进行统计分析.

萤石通过醋酸加热使CaCO3溶解,再经过滤、沉淀、烘干,以碳酸钠、硼砂混合熔剂熔融,酸浸取后,采用ICP-AES法测定碳酸钙、氟化钙及二氧化硅、三氧化二铁.此方法精密度好,回收率在96.0%-101.4%之间.

本文介绍了Plasma-Sepc-Ⅰ型电感耦合等离子发射光谱仪的一些常见具有代表性故障的检测方法,以及故障的排除.

重晶石经Na2CO3熔融,水浸取,过滤.沉淀经HCl溶解后,用电感耦合等离子体发射光谱法同时测定主成分BaSO4和次量成分Fe2O3以及滤液中的SiO2,结果与部颁标准方法符合.方法精密度好,主量组分BaSO4测定的RSD(n=6)为0.24%,次量组分Fe2O3和SiO2的RSD(n=6)分别是3.69%和1.45%.

In this paper, determination of Cu, Zn, Fe, Mn and Ca in human hair by ICP AES has been reported. Instrument parameters have been optimized and effect of acidity has been approached. The results measured for the standard material of human hair are in good agreement with the standard values.