New Edition: Methods for Chemical Analysis of Copper Concentrates Part 12: Determination of Fluorine and Chlorine Content Under revision, contains ion chromatography
Release time：Aug 15th,2022
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The
original version: GB/T 3884.12-2010 Chemical Analysis Methods of Copper
Concentrates Part 12: Determination of Fluorine and Chlorine Content
Ion Chromatography, which has been officially implemented on 2011-10-01,
the new version adds potentiometric titration. Some excerpts from the
original version are as follows:
Competent authority: China Nonferrous Metals Industry Association.
Main drafting units:
Daye Nonferrous Metals Design and Research Institute Co., Ltd., Beikuang Testing Technology Co., Ltd., Nantong Entry-Exit Inspection and Quarantine Bureau and other units.
The scope of application of this standard:
This part of GB/T 3884 specifies the ion chromatography method for the determination of fluorine and chlorine content in copper concentrates.
This part is applicable to the determination of fluorine and chlorine content in copper concentrate. The measurement range is: 0.005%~0.50% for fluorine and 0.01%~0.50% for chlorine.
Note: The chlorine measured in this standard refers to acid leaching chlorine.
The methodological principles on which this standard is based:
The
sample is decomposed by sulfuric acid, and the fluorine and chlorine in
it are separated from the sample with the escape of water vapor,
absorbed by the absorption liquid, and determined by ion chromatography.
Qualitative by retention time, quantitative by working curve method.
Key instruments and equipment:
4.1 Ion chromatograph: with conductivity detector.
4.2 Steam distillation device (see Appendix A).
4.3尼龙滤膜：0.22pm。
4.4 Syringe: 2.5mL.
