| 硫酸钡重量法快速测定含钡铁合金中钡 |
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| 引用本文： | 王永双,张俊安,朱利斌,余磊.硫酸钡重量法快速测定含钡铁合金中钡[J].冶金分析,2001,21(5):1-1. |
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| 作者姓名： | 王永双 张俊安 朱利斌 余磊 |
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| 作者单位： | 襄樊出入境检验检疫局,襄樊出入境检验检疫局,襄樊出入境检验检疫局,襄樊出入境检验检疫局 湖北襄樊441003,湖北襄樊441003,湖北襄樊441003,湖北襄樊441003 |
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| 摘 要： | 研究了硫酸钡重量法快速测定含钡铁合金中钡的条件。结果表明 ,在 0.12mol/LHCl介质中 ,选择EDTA作掩蔽剂 ,绝大多数离子不干扰测定 ,Ba2 + 在 2～ 5 0mg范围内的回收率为 98.97%～ 10 1.1% ;当Ca2 + ,Pb2 + 含量高时 ,将沉淀酸度调至 pH5 ,至少 2 5mgCa2 + ,5mgPb2 + 不影响测定。所拟方法用于硅钡合金及硅钙钡、硅铝钡铁合金样品分析 ,分析时间仅为4～ 6h ,RSD(n =5 ) =0.60 %～ 3.83% ,结果满意。
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| 关 键 词： | 钡 硫酸钡重量法 钡铁合金 |
| 文章编号： | 1000-7571(2001)05-0051-03 |
| 修稿时间： | 2001年1月11日 |
Rapid determination of barium in ferroalloy containing barium by means of barium sulfate gravimetry |
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| WANG Yong shuang,ZHANG Jun an,ZHU Li bin,YU Lei.Rapid determination of barium in ferroalloy containing barium by means of barium sulfate gravimetry[J].Metallurgical Analysis,2001,21(5):1-1. |
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| Authors: | WANG Yong shuang ZHANG Jun an ZHU Li bin YU Lei |
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| Abstract: | The conditions for the rapid determination of barium in barium ferroalloy with barium sulfate gravimetry were studied The results show that most of common ions did not interfere the determination of barium*"in the medium of 0 12mol/L HCl with EDTA as a masking reagent,and the recoveries were 98 97%-101.1% within the range of 2-50mg for Ba 2 ,and at least 25mg Ca 2 and 5mg Pb 2 did not effect the determination by adjusting the acidity to pH5 when the contents of Ca 2 and Pb 2 were high The developed method could be used to analyze barium in barium silicon,barium calcium silicon and barium aluminum silicon samples within 4-6h,The RSD(n=5)is 0 60%-3 83%,and the analytical results were satisfied |
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| Keywords: | barium barium sulfate gravimetry barium ferroalloy |
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