摘要
本文选择了硝酸、王水、逆王水，进行碳钢、低合金钢溶样条件试验，以谱线强度为指标，溶解酸种类、溶解酸浓度、溶解酸用量、定容酸用量等四因素为变化条件，各因素中有三水平，即按正交实验表Ｌ９（３＾４）进行试验，编制计算程序，快速、科学地优选出最佳溶样条件－－３０ｍｌＮＨＯ３（１＋５ｖ／ｖ）和３ｍｌＨＣｌ，ＩＣＰ－ＡＥＳ法同时测定铝、砷、铬、钴、铜、磷、锰、钼、镍、硅、锡、钛和钒１３种元素。
Nitric acid, aqua regia, and counter aqua regia were selected for engaging in the carbon steel and low alloyed steel sample dissolution experiment. The spectral intensity was taken as index. The four factors-kinds of dissolution acids, its concentration, used volume, and amount of acid used for volume graduating-were taken as variables. There were three levels for each factor, it means, the experiments were processed and calculation program was worked out according to orthogonal design form L9 (34). The best conditions of sample dissolution were selected fast and scientifically. It was 30mL HNO3 (l + 5v/v), 3mL HC1. The aluminium, arsenic, chromium, cobalt, copper, phosphorus, manganese, molybdenum, nickel, silicon, tin, titanium, and vanadium thirteen elements'content was simultaneously determined by ICP-AES method. Seven levels were selected. The repeatability (r) and reproducibility (R) were defined by cooperative test of ten laboratories. The recovery was 94%-105%.The precision was within 8%.
关键词
ICP-AES
碳钢
低合金钢
光谱分析
ICP-AES Carbon steel Low alloyed steel Aluminium Arsenic Chromium Cobalt Copper Phosphorus Manganese Molybdenum Nickel Silicon Tin Titanium Vanadium
