| PAN-6S作络合指示剂连续滴定测定汞和铅的研究 |
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| 引用本文： | 王京平,吴中明. PAN-6S作络合指示剂连续滴定测定汞和铅的研究[J]. 分析试验室, 2004, 23(2): 60-62 |
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| 作者姓名： | 王京平 吴中明 |
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| 作者单位： | 盐城师范学院化学系,盐城,224002;盐城师范学院化学系,盐城,224002 |
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| 摘 要： | 试验研究了pH3.0和pH5.4的介质中,以1 (2 吡啶偶氮) 2 萘酚 6 磺酸(PAN 6S)作为指示剂,以EDTA为滴定剂连续滴定汞和铅,其终点颜色变化敏锐,准确度高。
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| 关 键 词： | PAN-6S 汞 铅 络合滴定 连续滴定 |
| 文章编号： | 1000-0720(2004)02-0060-03 |
Simultaneous titration determination of mercury and lead with 1-(2-pyridylazo)-2-naphthol-6-sulphonic acid as a complexometric indicator |
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| WANG Jing-ping and WU Zhong-ming. Simultaneous titration determination of mercury and lead with 1-(2-pyridylazo)-2-naphthol-6-sulphonic acid as a complexometric indicator[J]. Chinese Journal of Analysis Laboratory, 2004, 23(2): 60-62 |
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| Authors: | WANG Jing-ping and WU Zhong-ming |
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| Affiliation: | WANG Jing-ping~* and WU Zhong-ming |
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| Abstract: | A method for simultaneous titration determination of mercury and lead was studied in the medium of pH 3.0 and pH 5.4. The end points for both mercury and lead were sharp with 1-(2-pyridylazo)-2-naphthol-6-sulphonic acid as an indicator and EDTA as a titrant. The amounts of mercury and lead did not interfere each other in the appropriate concentration range. The method was used for the simultaneous determination of mercury and lead in alloys samples with satisfactory results. |
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| Keywords: | 1-(2-pyridylazo)-2-naphol-6-sulphonic acid Mercury Lead Complexometric titration Continuous determination |
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