This standard specifies the determination of calcium and magnesium content by flame atomic absorption spectrometry. This standard is applicable to the determination of calcium and magnesium content in manganese ore. The measurement range (mass fraction): calcium is 0.050% to 5.00%; magnesium is 0.050% to 3.00%.
GB/T 2011 Method of sampling and sample preparation of manganese ores in bulk
GB/T 1513-2006 history
2006GB/T 1513-2006 Manganese ores. Determination of calcium and magnesium contents. Flame atomic absorption spectrometric method
1979GB/T 1513-1979 Methods for determination of calcium oxide and magnesium oxide contents in manganese ores--Atomic absorption spectrophotometric method