This part of GB/T 13025 specifies the method for the determination of calcium and magnesium in salt products and salt chemical products. The volumetric method in Chapters 3 and 4 of this part is applicable to the determination of calcium and magnesium in salt products and salt chemical products and their raw materials; the atomic absorption spectrophotometry in Chapter 5 is applicable to the determination of trace amounts of calcium and magnesium in salt products. The detection limit of absorption spectrophotometry is: calcium 0.05mg/kg, magnesium 0.05mg/kg.
GB/T 13025.6-2012 Referenced Document
GB/T 6682-2008 Water for analytical laboratory use.Specification and test methods
GB/T 13025.6-2012 history
2012GB/T 13025.6-2012 General test method in salt industry.Determination of calcium and magnesium
1991GB/T 13025.6-1991 General test method in salt industry--Determination of calcium and magnesium ions