GB/T 3286.1-1998 in English

《GB/T 3286.1-1998石灰石、白云石化学分析方法 氧化钙量和氧化镁量的测定》由TC183（全国钢标准化技术委员会）归口，主管部门为中国钢铁工业协会。
本标准规定了用络合滴定法测定氧化钙、氧化镁量和用原子吸收光谱法测定氧化镁量。本标准适用于石灰石、白云石中氧化钙量和氧化镁量的测定，也适用于冶金石灰中氧化钙量和氧化镁量的测定。第一篇 络合滴定法，测定范围：氧化钙量大于25％，氧化镁量大于2．5％；第二篇原子吸收光谱法，测定范围：氧化镁量0.10％～2.50％。

Scope

This standard specifies the determination of calcium oxide and magnesium oxide by complexometric titration and the determination of magnesium oxide by atomic absorption spectrometry. This standard applies to the determination of calcium oxide and magnesium oxide in limestone and dolomite, and also applies to the determination of calcium oxide and magnesium oxide in metallurgical lime. The first part is complexometric titration, the measurement range: the amount of calcium oxide is greater than 25%, and the amount of magnesium oxide is greater than 2.5%; the second part is atomic absorption spectrometry, the measurement range is: the amount of magnesium oxide is 0.10% to 0.50%.