电感耦合等离子体原子发射光谱法测定铬渣中硅、镁、铁、铝

The determination of silicon, phosphorus, manganese and chromium contents in Pig iron containing chromium and manganese by ICP-AES

研究了电感耦合等离子体原子发射光谱法测定铬渣中钙、镁、铁、铝的分析方法。试样用硝酸钾、氢氧化钠熔融，水浸后硫酸酸化，进行测定，测定值的相对标准偏差（RSD，n=8）为0．68％～1．99％，加标回收率在97．3％～101．8％之间，实现了铬渣样品中钙、镁、铁、铝元素的快速准确测定。

This paper introduces a method to analysis the content of calcium,magnesium, iron and aluminum in Chromium slag by ICP-AES. The sample is melted with potassium nitrate and sodium hydroxide. After water leaching, the acid is acidified, and the test is carried out. The relative standard deviation is 0.68% - 1.99% and recovery ratio is up to 97.3% - 101.8%. The rapid and accurate determination of calcium, magnesium, iron and aluminum in the samples of chromium residue has been realized.