| 电位溶出法测定脱砷剂中的砷容量 |
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| 引用本文： | 刘壮,焦玉海,赵如松,唐义会,舒燕,田正昕. 电位溶出法测定脱砷剂中的砷容量[J]. 石油化工, 2002, 31(3): 214-216 |
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| 作者姓名： | 刘壮 焦玉海 赵如松 唐义会 舒燕 田正昕 |
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| 作者单位： | 1. 北京石油化工学院,应用化学系,北京,102600
2. 北京燕山石油化工公司,聚丙烯事业部,北京,102500 |
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| 基金项目： | 燕山石化公司科研基金资助项目 ( 2 0 0 -16)。 |
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| 摘 要： | 讨论了在 9mol/LHCl5ml,1mg/ml金溶液 0 5ml,加水稀释至 2 0ml的底液中 ,采用标准加入法进行脱砷剂中砷容量的电位溶出分析。实验表明 ,峰电位Ep在 +0 2 2V(饱和甘汞电极为参比电极 )左右砷有一灵敏的一阶导数峰 ,该峰峰高Hp与砷的质量浓度在 0 2～ 2 5 μg /ml之间有较好的线性关系。可对试样进行准确测定。
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| 关 键 词： | 电位溶出分析 脱砷剂 砷 |
| 文章编号： | 1000-8144(2002)03-0214-03 |
| 修稿时间： | 2001-08-18 |
The PSA Method of Analyzing Arsenic in De-Arsenic Absorbent |
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| LIU Zhuang ,JIAO Yu-hai ,ZHAO Ru-song ,TANG Yi-hui ,SHU Yan ,TIAN Zheng-xin. The PSA Method of Analyzing Arsenic in De-Arsenic Absorbent[J]. Petrochemical Technology, 2002, 31(3): 214-216 |
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| Authors: | LIU Zhuang JIAO Yu-hai ZHAO Ru-song TANG Yi-hui SHU Yan TIAN Zheng-xin |
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| Affiliation: | LIU Zhuang 1,JIAO Yu-hai 1,ZHAO Ru-song 1,TANG Yi-hui 1,SHU Yan 1,TIAN Zheng-xin 2 |
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| Abstract: | This paper discusses the determination of arsenic content in de-arsenic absorbent by the method of potential stripping analysis(PSA).Arsenic deposited on the working electrode(Gold-film electrode)was oxidized by Au 3+ which is contained in a base liquid composed of 5 ml HCl and 0 5 ml Au(1 mg/ml)diluted to 20 ml.There is a sensitive one-step derivative peak of As at E p(the peak potential)= +0 22 V.A good linear connection exists between the height of this peak( H p)and the concentration of arsenic when the latter is between 0 2 μg/ml to 2 5 μg/ml.Precision of the proposed method was good(RSD,2%),and the percent recovered ranged from 96%～105%. |
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| Keywords: | potential stripping analysis(PSA) de-arsenic absorbent arsenic |
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