1 Scope
This standard specifies the method for determination of chloride in the water for industrial circulating cooling system and boiler.
In this standard, Mohr method and potentiometric titration specified are applicable to determination of chloride in natural water, circulating cooling water and boiler water using softened water as feedwater, the determination scope is between 5mg/L and 150mg/L; coprecipitation concentration and spectrophotometry is applicable to the determination of chloride in demineralized water and boiler feedwater, and the determination scope is between 10μg/L and 100μg/L.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document referred to applies.
Contents
Foreword I
1 Scope
2 Normative References
3 Mohr Method
3.1 Principle
3.2 Reagents and Materials
3.3 Analytical Procedures
3.4 Result Calculation
3.5 Permissible Deviation
4 Potentiometric Titration
4.1 Principle
4.2 Reagents and Materials
4.3 Instruments and Equipments
4.4 Analytical Procedures
4.5 Result Calculation
4.6 Permissible Deviation
5 Coprecipitation Concentration and Spectrophotometry
5.1 Principle
5.2 Reagents and Materials
5.3 Instruments and Equipments
5.4 Analytical Procedures
5.5 Result Calculation
5.6 Permissible Deviation
