采用天然标准是提高AES粉末法准确度的有效途径──同时测定地质样品中Ag等8个痕量元素

IMPROVING THE AES ANALYTICAL ACCURACY OF POWDER SAMPLES BY NATURAL STANDARD determination of 8 Trace Elements in geologic Samples

本文进一步研究ＡＥＳ法用天然标准代替合成标准，实验证明ＡＥＳ粉末法的最大误差来自合成标准。同时测定地质样品中Ａｇ等８个痕量元素。大批量的分析结果表明，只要严格控制操作条件，分析准确度可以提高到一个新的水平。

Synthetic standard was replaced by natural standard to determine 8 trace elements in geologic samples by AES. Linearity of the working curve was obviously improved. Matrix effect, influence of a third element and the contamination of samples were significantly reduced. The detection limits were as follows (μg/g): Ag 0. 02, Cul, Ph3, Zn10, W2 f Snl,Bi 3 and Mo 0. 3. The RSD was less than 10%.