摘要
采用Ｘ射线荧光靶线内标法测定黄金饰品中银含量，当ｗ（Ａｇ）＜１０％时，测定的标准偏差小于００１％，测量平均值与标准值的偏差亦小于００１％；当ｗ（Ａｇ）＜８％时，测定的标准偏差小于００４％，测量平均值与标准值的偏差小于００７％。方法能较好地补偿了表面形状对测定结果的影响。
The determination of Ag in gold jewellery by target line internal standard XRF spectrometry is introduced in this paper. When w (Ag) in sample is in a range of 1%～8%,theaccuracyof 0.07% is obtained with precision of 0.04% SD. And when w (Ag) is <1%,better accuracy(0.01%) and precision(0.01% SD) are provided by this method. With compensation for the influence from surface shape of the sample effectively, the method has been applied to the determination of Ag in the samples in which Au contents are higher than 92%.
出处
《岩矿测试》
CAS
CSCD
北大核心
1996年第3期229-231,共3页
Rock and Mineral Analysis
关键词
靶线内标法
金饰品
银
X射线荧光
target line internal standard method, gold jewellery,silver, determination
