本文叙述了用原子吸收光谱法(AAS)测定地质样品中金的方法,该法包括顺序使用HBr-Br_2和王水(HCl-HNO_3(3+1))消化的改进程序。焙烧样品首先用HBr-Br_2混合物处理样品。金从水相进入有机相(IBMK——甲基异丁基酮通常写成MIBK),干渣再用王水浸取,金在Sn(Ⅱ)Cl_2溶液中同亚碲酸钾共沉淀。沉淀萃入甲苯,金制成王水溶液,最后喷雾进入空气-乙炔火焰。该方法适用于各种基体的不同材料中金的测定。 This article describes a method for the determination of gold in geological samples by atomic absorption spectroscopy (AAS), which includes an improved procedure for the sequential digestion with HBr-Br 2 and aqua regia (HCl-HNO 3 (3 + 1)). Calcining the sample The sample is first treated with the HBr-Br2 mixture. Gold from the aqueous phase into the organic phase (IBMK-- methyl isobutyl ketone is usually written as MIBK), dry residue and then leached aqua regia, gold in the Sn (Ⅱ) Cl_2 solution with potassium tellurite co-precipitation. Precipitation extraction of toluene, gold made of aqua regia, the final spray into the air - acetylene flame. This method is suitable for the determination of gold in different materials of various substrates.