| 三价锰容量法测定锰碳合金球中的锰 |
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| 引用本文： | 文书贤,李凤超. 三价锰容量法测定锰碳合金球中的锰[J]. 山东冶金, 2010, 32(6): 41-42 |
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| 作者姓名： | 文书贤 李凤超 |
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| 作者单位： | [1]济南济钢铁合金厂,山东济南250105 [2]济南高新开发区泉东标准物质研究所,山东济南250100 |
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| 摘 要： | 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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| 关 键 词： | 三价锰容量法 锰碳合金球 锰 |
Determination of the Manganese in Manganese-carbon Alloy Ball by Trivalent Manganese Volumetric Method |
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| WEN Shu-xian,LI Feng-chao. Determination of the Manganese in Manganese-carbon Alloy Ball by Trivalent Manganese Volumetric Method[J]. Shandong Metallurgy, 2010, 32(6): 41-42 |
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| Authors: | WEN Shu-xian LI Feng-chao |
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| Affiliation: | 1 Jinan Jigang Iron Alloy Factory,Jinan 250105,China;2 Jinan High-tech Development Zone Springs East Reference Material Research Institute,Jinan 250100,China) |
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| Abstract: | The determination of manganese content in manganese-carbon alloy ball adopted trivalent manganese volumetric method.Because of high carbon content（30% above） in the alloy,insoluble carbides were dissolved by adding perchloric acid after the simple was dissolved by phosphoric acid,at the same time,adding to ammonium nitrate for quantificational oxidation of the manganese.The temperature was controlled at about 200 ℃ and the feasible amount of the perchloric acid was from 5 mL to 9 mL.The analysis results were stable and accurate.The RSD was from 0.184 2% to 0.223 4% and the recovery was between 96% and 103%. |
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| Keywords: | trivalent manganese volumetric method manganese-carbon alloy ball manganese |
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