GB/T 3286.2-1998 in English

《GB/T 3286.2-1998石灰石、白云石化学分析方法 二氧化硅量的测定》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。
本标准规定了用硅钼蓝光度法和高氯酸脱水重量法测定二氧化硅量。本标准适用于石灰石、白云石中二氧化硅量的测定，也适用于冶金石灰中二氧化硅量的测定。第一篇 钼蓝光度法，测定范围：二氧化硅量0．05％～4．00％；第二篇 高氯酸脱水重量法，测定范围；二氧化硅量大于2.00％。

Scope

This standard specifies the determination of silicon dioxide content by silicon molybdenum blue photometry and perchloric acid dehydration gravimetric method. This standard applies to the determination of the amount of silica in limestone and dolomite, and also applies to the determination of the amount of silica in metallurgical lime. The first part is the molybdenum blue photometric method, the measurement range: the amount of silicon dioxide is 0.05% to 4.00%; the second part is the perchloric acid dehydration gravimetric method, the measurement range is: the amount of silicon dioxide is greater than 2.00%.