| 乙醇-氯化亚铜-氯化铵-盐酸复合溶剂分离—EDTA返滴定法测定铝电解质中单质铝 |
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| 引用本文： | 蒲秋梅,任凤莲,曹福悦.乙醇-氯化亚铜-氯化铵-盐酸复合溶剂分离—EDTA返滴定法测定铝电解质中单质铝[J].冶金分析,2011,31(3):23-27. |
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| 作者姓名： | 蒲秋梅 任凤莲 曹福悦 |
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| 作者单位： | 中南大学化学化工学院 |
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| 基金项目： | 国家高技术研究发展计划(863项目) |
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| 摘 要： | 新型低温铝电解质体系物相组成复杂，单质铝的分离测定尤为困难。本文采用高选择性复合溶剂乙醇-氯化亚铜-氯化铵-盐酸（ECAH）直接分离后测定铝电解质中单质铝，成功解决了单质铝与其它铝的化合物分离困难的问题，有效降低了铝电解质溶样时铝的氟化物的微溶效应带来的误差，为铝电解质中单质铝的物相分析提供了可靠的研究方案。采用经典EDTA络合返滴定法测得铝电解质样品中单质铝含量，加标回收率在97%～103%之间，RSD(n=6)为1.1%和1.5%。测定结果和Al-CAS-OP-CPC四元络合光度法测定结果进行比对，结果一致。
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| 关 键 词： | 单质铝 铝电解质 分离测定 选择性溶剂 |
Determination of aluminum in aluminum electrolyte by EDTA back titration with ethanol-cuprous chloride-ammonium chloride-hydrochloric acid complex solvent separation |
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| PU Qiu-mei,REN Feng-lian,CAO Fu-yue.Determination of aluminum in aluminum electrolyte by EDTA back titration with ethanol-cuprous chloride-ammonium chloride-hydrochloric acid complex solvent separation[J].Metallurgical Analysis,2011,31(3):23-27. |
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| Authors: | PU Qiu-mei REN Feng-lian CAO Fu-yue |
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| Affiliation: | College of Chemistry and Chemical Engineering，Central South University |
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| Abstract: | It was particularly difficult to separate and determine aluminum in new low-temperature aluminum electrolyte system because of its complicated components.In this paper,aluminum in aluminum electrolyte was directly separated and determined using high-selectivity ethanol-cuprous chloride-ammonium chloride-hydrochloric acid(ECAH) as complex solvent.This method successfully settled the problem of difficult separation of aluminum from aluminum compounds,effectively reduced the determination error introduced by s... |
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| Keywords: | aluminum aluminum electrolyte separation and determination selective solvent |
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