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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L_9(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—30ml NHO_3(1+5v/v)和3ml HCl,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。为确定测试方法的重复性(r)和再现性(R)而进行精密度试验。精密度数据是由10个实验室对7个样品作试验确定的。方法的回收率为94％-105％。精密度在8％以内。
In this paper, nitric acid, aqua regia and anti-aqua regia were selected for the test of carbon steel and low-alloy steel. According to the spectral intensity as the index, four factors, such as dissolved acid type, dissolved acid concentration, dissolved acid dosage, For the changing conditions, there are three levels of each factor, that is to say, the orthogonal experiment table L_9 (3-4) is used to carry out the experiment and the calculation program is prepared so that the optimal solution condition of 30ml NHO_3 (1 + 5v / v) Simultaneous determination of 13 elements including aluminum, arsenic, chromium, cobalt, copper, phosphorus, manganese, molybdenum, nickel, silicon, tin, titanium and vanadium by 3ml HCl and ICP-AES. Precision tests were conducted to determine the repeatability (r) and reproducibility (R) of the test method. The precision data was determined by testing seven samples from 10 laboratories. The recovery of the method was 94% -105%. Precision within 8%.