DL-18铝合金多元素ICP-AES分析方法

采用引进的OPTIMA-3000型电感耦合等离子体全谱直读光谱仪(ICP-AES)。对DL-18铝合金中15种杂质元素进行测定方法的研究。对样品的溶解、元素波长、载气流量、辅助气流、观察高度等工作条件进行试验，选定了最佳测定条件。各元素工作曲线相关系数为0．9963-1．0000。通过对拟定方法测试数据的精密度和准确度进行系统试验，各元素的相对标准偏差均小于4％．符合GB5871-86元素含量所允许偏差。该方法已经用于日常分析试验．获得较好结果。

DL-18 Aluminum Alloy Multi-Element (ICP-AES) Analysis Method

This paper is to describe the study on the determination method for 15 kinds of impurity elements in DL-18 aluminum alloy by introducing the OPTIMA-3000 inductive coupling plasma all-direct-reading spectrometer(ICP-AES).The testing was done on the working conditions such as the sample resolution,element wave-length,air-carrier flow,auxiliary air flow,observed altitude,etc.to select the optimal determination conditions. The corresponding coefficient for each element working curve is within 0.9963 to 1.0000.The system test was performed on the accuracy and correctness of the tested data done by the determined methods and the relative standard deviation of each element is all less than 4%,which conforms to the allowable deviation for the element content in GB5871-86.This method has been used in the daily analysis test and the perfect results have been obtained.