| 全自动电位滴定法测定镍钴锰酸锂中残余的碳酸锂含量 |
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| 引用本文： | 杨春林.全自动电位滴定法测定镍钴锰酸锂中残余的碳酸锂含量[J].中国无机分析化学,2017,7(1):4-7. |
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| 作者姓名： | 杨春林 |
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| 作者单位： | 北京矿冶研究总院金属矿产资源评价与分析检测北京市重点实验室,北京,102628 |
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| 基金项目： | 北京市科技创新基地培育与发展专项(Z151100001615044)资助 |
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| 摘 要： | 采用自动电位滴定法测定镍钴锰酸锂中残余的碳酸锂含量。试样经搅拌水浸出其中的残余碳酸锂,用盐酸进行滴定。对试样进行11次平行测定,相对标准偏差(RSD)小于3.2%。在镍钴锰酸锂试样中加入基准物质无水碳酸钠进行碳酸根的加标回收实验,碳酸根的加标回收率在97.7%~103%。方法测定结果准确、可靠。
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| 关 键 词： | 镍钴锰酸锂 自动电位滴定法 碳酸锂 |
| 收稿时间： | 2016/6/15 0:00:00 |
| 修稿时间： | 2016/7/4 0:00:00 |
Determination of Residual Lithium Carbonate in Nickel Cobalt LithiumManganate by Automatic Potentiometric Titration Method |
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| YANG Chunlin.Determination of Residual Lithium Carbonate in Nickel Cobalt LithiumManganate by Automatic Potentiometric Titration Method[J].Chinese Journal of Inorganic Analytical Chemistry,2017,7(1):4-7. |
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| Authors: | YANG Chunlin |
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| Institution: | Beijing General Research Institute of Mining and Metallurgy, Beijing Key Laboratory for Evaluation and Testing of Metallic Mineral Resources, Beijing 102628, China |
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| Abstract: | The contents of residual lithium carbonate in the nickel cobalt lithium manganate samples were determined by automatic potentiometric titration method. The residual lithium carbonate was leached out after samples were stirred in water, and then titrated with hydrochloric acid. The relative standard deviation (RSD) was less than 3.2% for 11 parallel determinations. For recovery tests, anhydrous sodium carbonate were added as standard materials to the nickel cobalt lithium manganate samples and the recovery rates of carbonate ions were in the range of 97.7%~103%. The method is accurate and reliable with satisfactory results. |
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| Keywords: | nickel cobalt lithium manganate automatic potentiometric titration lithium carbonate |
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