铜精矿中氧化镁的测定,一般都采用沉淀分离,EDTA滴定法。该法手续繁杂,费时长。本文利用燃烧器转角90度以降低灵敏度的方法,将原子吸收法成功地应用于铜精矿中高含量镁的测定。本法经不同单位的生产考验,证明具有选择性好、简便、快速,容易掌握等优点,精密度、准确度满意。试剂氧化镁标准溶液(1毫克/毫升)按常规 Determination of magnesium oxide in copper concentrate, are generally used precipitation separation, EDTA titration method. The procedure is complicated and time-consuming. In this paper, the method of reducing the sensitivity by using the burner angle of 90 degrees, the atomic absorption method was successfully applied to the determination of high content of magnesium in copper concentrate. This law by different units of production test proved to have good selectivity, simple, rapid, easy to grasp, etc., precision, accuracy and satisfaction. Reagents Magnesium oxide standard solution (1 mg / ml) as usual