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详细介绍了制备钯和铂锭状固体标准样品的实验方法。该固体标样可用于测定固体样品的电弧/火花发射光谱、火花烧蚀发射光谱和辉光放电质谱(GD-MS)等仪器分析方法。在标准样品的制备过程中,首先将含有33种待测杂质元素的钯或铂溶液进行沉淀和共沉淀得到“贮备”粉末,然后将粉末与99.999%纯金属钯或铂进行熔炼,从而获得杂质元素含量在(5~10)×10-6的固体标准样品。部分杂质元素在沉淀和共沉淀过程、热处理环节会发生损失,在最终得到的锭中,钯标准样品有25个元素、铂标准样品有26个元素得到定量回收,发生污染的元素主要包括金、硼、铁和硅。
The experimental methods for preparing standard samples of palladium and platinum ingot solid are introduced in detail. The solid standard can be used for the determination of solid samples arc / spark emission spectroscopy, spark erosion emission spectrometry and glow discharge mass spectrometry (GD-MS) and other instrumental analysis methods. In the preparation of a standard sample, a palladium or platinum solution containing 33 elements to be examined is first precipitated and coprecipitated to give a “” stock "powder, which is then smelted with 99.999% pure palladium or platinum Obtained solid content of impurity elements (5 ~ 10) × 10-6 solid standard sample. Part of the impurity elements in the precipitation and coprecipitation process, the heat treatment will occur loss, in the final ingot, the palladium standard sample has 25 elements, 26 samples of platinum standard samples were quantitative recovery, the pollution of the elements include gold, Boron, Iron and Silicon.