| 铬黑T指示剂稳定体系的研究及应用 |
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| 引用本文： | 岳冠华,王鹏. 铬黑T指示剂稳定体系的研究及应用[J]. 北京建筑工程学院学报, 2007, 23(1): 49-51 |
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| 作者姓名： | 岳冠华 王鹏 |
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| 作者单位： | 北京建筑工程学院,环境与能源工程学院,北京,100044;北京建筑工程学院,环境与能源工程学院,北京,100044 |
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| 摘 要： | 对EDTA络合滴定法测定硬度的铬黑T(EBT)指示剂进行了研究. 通过铬黑T溶液吸光性的测定,对铬黑T各种液体体系的溶解性、稳定性进行了探讨,找到了0.1?T-20%NH3-NH4Cl-0.1%PVP乙醇溶液的稳定体系,并将其应用于自来水中总硬度的测定,终点颜色变色敏锐,平行测定结果好,精密度高.并与固体指示剂进行了对比.
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| 关 键 词： | 铬黑T(EBT) 液体指示剂 稳定性 络合滴定 |
| 文章编号： | 1004-6011（2007）01-0049-03 |
| 收稿时间： | 2006-11-29 |
| 修稿时间： | 2006-11-29 |
Study and Application of Eriochrome Black T Stable Solution System |
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| Yue Guanhua,Wang Peng. Study and Application of Eriochrome Black T Stable Solution System[J]. Journal of Beijing Institute of Civil Engineering and Architecture, 2007, 23(1): 49-51 |
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| Authors: | Yue Guanhua Wang Peng |
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| Affiliation: | School of Environment and Energy Engineering, BICEA Beijing 100044 |
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| Abstract: | The Eriochrome Black T(EBT) indicator in EDTA complex metric titration is studied.Through detecting the absorbance of EBT solution,the dissolubility and stability are discussed.At last,the stable solution system,that is 0.1?T-20%NH3-NH4Cl-0.1%PVP alcohol solution is found.This stable solution was applied in detecting the total hardness of running water.At the end,the color changes are sharp,the parallel detection datas are close and precise.At the same time,we made the contrast experiments with solid EBT indicator. |
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| Keywords: | Eriochrome Black T(EBT) indicator solution stability complex metric titration |
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