Standard Number: YS/T 445.4-2019(YS/T445.4-2019)
Chinese:银精矿化学分析方法 第4部分：三氧化二铝含量的测定 铬天青S分光光度法和Na2EDTA滴定法
English:Methods of chemical analysis of silver concentrates Part 4: Determination of aluminum trioxide content Chromium azurite S spectrophotometric and Na2EDTA titrimetric methods
Effective Date:2020-01-01
Standard Applicability:This part applies to the determination of the amount of aluminum trioxide in silver concentrate. Determination range of Method 1: 0.20%～1.00%; Determination range of Method 2: >1.00%～12.00%.
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