铅火试金富集—发射光谱法测定化探样品痕量金、铂和钯

Determination of Trace Platinum,Palladium and Gold in Geochemical Samples by Emission Spectrometry With Lead Fire Assaying Concentration

试样用铅火试金富集铂组元素及金,加入1 mg银,在950℃熔融得到含贵金属的铅扣。铅扣与熔渣分离后在900℃灰吹得含铂、钯和金的银合金粒。把合金粒装入电极,以发射光谱法同时测定铂、钯和金的含量。

Platinum group elements and gold in sample were enriched by lead fire assaying, after adding 1 mg silver and melting at 950 ℃, lead button containing precious metals was obtained. Then lead button was separated from slag, silver grains containing platinum, palladium and gold were obtained by soot blowing at 900 ℃. Putting the alloy grain into the electrode, contents of platinum, palladium and gold were simultaneously determined by the emission spectrometry.