| 火焰原子吸收光谱法测定粗铜中痕量铋、锑 |
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| 引用本文： | 马丽君.火焰原子吸收光谱法测定粗铜中痕量铋、锑[J].理化检验(化学分册),2010(1). |
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| 作者姓名： | 马丽君 |
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| 作者单位： | 山西垣曲中条山有色金属有限公司计量检验部中心化验室; |
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| 摘 要： | 粗铜样品经硝酸溶解,所得样品溶液中的铜离子在过量氨水中生成可溶性铜氨络离子,而铋、锑则以氢氧化铁和氢氧化镧作载体共沉淀,实现了富集铋、锑并与铜分离。基于此提出了原子吸收光谱法同时测定粗铜中的微量铋、锑。对浓盐酸的用量,硝酸铁和硝酸镧的加入量等试验条件进行了优化。铋的质量浓度在10 mg.L-1以内、锑的质量浓度在5 mg.L-1以内分别与其吸光度呈线性关系,检出限(3s)分别为0.06,0.04 mg.L-1,相对标准偏差(n=10)均小于2.0%。
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| 关 键 词： | 火焰原子吸收光谱法 铋 锑 |
FAAS Determination Trace Amounts of Bismuth and Antimony in Crude Copper |
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| MA Li-jun.FAAS Determination Trace Amounts of Bismuth and Antimony in Crude Copper[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2010(1). |
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| Authors: | MA Li-jun |
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| Institution: | Analytical Lab/a>;Department of Measurement and Inspection/a>;Shanxi Hengqu Zhongtiaoshan Nonferrous Metal Co./a>;Ltd./a>;Hengqu 043700/a>;China |
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| Abstract: | The sample of crude copper was dissolved with HNO3,and Cu2+ ion in the sample solution was transformed into soluble complex of Cu(NH3)2+4 with excess ammonia water.Bismuth and Sb ions were enriched and separated from copper by coprecipition with ferric hydroxide and lanthanum hydroxide as carriers.Based on these facts,a method of determination of Bi and Sb in crude copper by FAAS was proposed.Experimental conditions,including the amount of conc.HCl,ferric nitrate and lanthanum nitrate added were optimized.L... |
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| Keywords: | FAAS Bismuth Antimony |
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