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铜精矿中低含量银的测定,用火试金法手续繁杂,费时长,准确度较差。本文于10％盐酸介质中,利用332.3nm非吸收线或氘灯扣除背景吸收,将原子吸收法成功地应用于铜精矿中低含量银的测定。本法选择性高,试样酸溶后即可直接测定,铜精矿中可能存在的36种元素不干扰。方法简便、快速、容易掌握。经不同单位、不同方法对照分析,精密度、准确度满意。试剂银标准溶液(10微克/毫升),按常规配制。仪器 GGX-Ⅱ型原子吸收分光光度计,工作条件示于表1。分析步骤称取0.25—0.50克试样于150毫升烧
Determination of low-level silver concentrate in copper concentrate, complicated procedures with fire test method, time-consuming, less accurate. In this paper, the background absorption was deducted by using 332.3nm non-absorption line or deuterium lamp in 10% hydrochloric acid medium. The atomic absorption method was successfully applied to the determination of low silver content in copper concentrate. This method is highly selective, the sample can be determined directly after acid-soluble, copper concentrate may exist in the 36 elements do not interfere. Method is simple, fast, easy to grasp. After different units, different methods of control analysis, precision, accuracy satisfaction. Reagent silver standard solution (10 micrograms / ml), according to conventional preparation. Instrument GGX-Ⅱ atomic absorption spectrophotometer, working conditions are shown in Table 1. Analytical steps Weigh 0.25-0.50 grams of the sample in 150 ml of acetone