原子吸收光谱法测定金银样品前处理的讨论

讨论了在岩石、矿物及化学探矿样品中金、银的原子吸收光谱分析时，样品前处理应关注的一些问题实践经验表明要注意样品的加工过程和金银的赋存状态，以保证样品有足够的代表性；针对不同矿种类型，选择合适的样品前处理方法，尽量避免样品在处理过程中的挥发损失、包夹、共沉淀吸附等情况的发生；对单矿物金、银的连续测定，建议采用多次湿法酸处理来保证样品的分解，并根据其含量进行必要的分离富集或稀释，以满足测定的要求．

Discussion of Sample Processing for the Determination of Gold and Silver by Atomic Absorption Spectrometry

This paper discusses some main points in atomic absorption spectrometry measurement of gold and silver in rock, mineral and chemistrys exploration of mineral sample. Experiment results and practice experience demonstrate that the need to notice the treating of sample and the existence appearance of the gold and silver, to guarantee the enough representatives with the sample. According to different kinds of mineral, choose proper sample processing method, so as to avoid the occurrence of lose of evaporation, wrapping up, precipitating to adsorb etc. in sample handle processing. It was suggested that measurement of gold and silver of the single mineral should be done continuously, and the adoption of many processing with sour wet method to guarantee the decomposition of the sample, and carry on separation enrich to gather or dilution according to the content, thus satisfy the requirement.