火花激发原子发射光谱分析不锈钢线材

火花激发原子发射光谱法应用于直径小于8mm的不锈钢线材的分析，对此类试样应用了一种特制的夹具，用块状标准样品制作工作曲线。由于线状试样和块状标准样品之间的形状差异所产生的系统不确定度借采用同类型标样作校正，对共存元素的相互干扰也采用了相应的校正方法。其它分析条件，包括严格的制样工序，氩气的纯度要求及其流量控制，以及光源的最佳条件等，作了深入的试验。按所提出的方法测定了不锈钢线材试样中碳、硅、锰、磷、硫、铬、镍及钛等8个元素。经校正后的结果与化学法测得结果相符。

ATOMIC EMISSION SPECTROMETRIC ANALYSIS OF STAINLESS STEEL WIRES

Atomic emission spectrometry with spark discharge excitation was applied to the analysis of samples of stainless steel wires with diameter smaller than 8 mm.A specially designed clamping apparatus was used for such samples.Cake-formed standard samples were used in the preparation of working curves,and the systematic uncertainty due to difference of shape of wire samples and cake standard samples was corrected by using standard samples of same kind of steel.Interferences of co-existing elements were eliminated by correction.Other analytical conditions,including the strict procedure of sample preparation,high-purity of argon and control of its flow-rate,the optimum condition of light source and etc,were studied thoroughly.Eight elements(C,Si,Mn,P,S,Cr,Ni,Ti) were determined by the proposed method,and the results obtained after necessary corrections were found in consistency with the results obtained by chemical methods.