What is ISO 15661- Alkaline fusion and potentiometric titration method about?
ISO 15661 specifies an analytical method for the determination of total chlorine content using alkaline fusion and potentiometric titration.
The method described in ISO 15661 is applicable to copper and nickel sulfide ores and concentrates having chlorine content in the following ranges:
- Method 1: 80 μg/g to 4 300 μg/g
- Method 2: 70 μg/g to 4 300 μg/g
Who is ISO 15661 - Alkaline fusion and potentiometric titration method for?
ISO 15661 on determining the total chlorine content is relevant to:
- Testing authorities
- Geochemical engineers
- Hydrometallurgical engineers
Why should you use ISO 15661 - Alkaline fusion and potentiometric titration method?
Sulfide ores are crushed and ground to liberate nickel minerals from the waste materials.
ISO 15661 assists the user with analytical method for the determination of total chlorine content using alkaline fusion and potentiometric titration. The test portion is decomposed by fusion with a mixture of sodium carbonate and potassium carbonate or with a mixture of potassium nitrate and potassium hydroxide. The fusion mixture is dissolved in water and the sulfide contained is oxidized with hydrogen peroxide. At the acid pH, the chloride content is determined by potentiometric titration with silver nitrate solution after a known addition of the analyte.
Overall, ISO 15661 is helpful as it specifies two fusion methods for test sample preparation analysis. The choice of method depends on materials, reagents, and the time available for performing the procedure.
