三价锰容量法测定锰碳合金球中的锰
Shandong Metallurgy(2010)
Abstract
采用三价锰容量法测定锰碳合金球中锰含量,因合金中碳含量高(30%以上),磷酸溶样后加入高氯酸溶解难溶碳化物,同时加入硝酸铵定量氧化锰。温度控制在200℃左右,高氯酸用量以5~9mL为宜,分析结果稳定准确,相对标准偏差在0.1842%~0.2234%,加标回收率在96%~103%。
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Key words
trivalent manganese volumetric method,manganese-carbon alloy ball,manganese
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