【摘要】 用HCl-HNO3混和酸溶解不锈钢样品,用钇为内标物质,使用标准样品绘制工作曲线,用电感耦合等离子体发射光谱(ICP-OES)法测定了不锈钢中的硅、锰、磷、铬、镍、钼、铜。在选定的操作条件下,对不锈钢标准样品按实验方法进行测定,标准样品的测定值与标准值基本吻合。元素质量分数在0.01%～0.10%时,相对标准偏差(n=11)RSD<5%;质量分数大于0.10%,RSD <1%。同时测定不锈钢中的硅、锰、磷、铬、镍、钼、铜元素的含量,操作简单、快速、灵敏度高,结果令人满意。更多还原

【Abstract】 Dissolving stainless steel samples with HCl-HNO₃ mixed acid,using yttrium as internal standard material,drawing working curves with standard samples,silicon,manganese,phosphorus,chromium,nickel,molybdenum and copper in stainless steel were measured by ICP-OES.Under the selected operating conditions,the stainless-steel standard sample was measured according to the experimental method.Element mass fraction within the range of 0.01%—0.10%,relative standard deviation（n=11）RSD<5%;mass fraction>0.10%,RSD<1%.The method is simple and rapid,and the precision and accuracy are all in line with the requirements.This method was used to simultaneously analyze the content of silicon,manganese,phosphorus,chromium,nickel,molybdenum and copper in stainless steel samples with satisfactory results.更多还原