| 5-Br-PAN-S作为锌的络合滴定指示剂 |
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| 引用本文： | 吴小华,陈建荣.5-Br-PAN-S作为锌的络合滴定指示剂[J].冶金分析,1998,18(3):1-1. |
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| 作者姓名： | 吴小华 陈建荣 |
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| 作者单位： | 浙江师范大学化学系 |
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| 摘 要： | 研究了以１－（５－溴－２－吡啶偶氮）－２－萘酚－６－磺酸（５－Ｂｒ－ＰＡＮ－Ｓ）作为络合滴定指示剂测定锌。在ｐＨ６．０的ＨＡｃ－ＮａＡｃ介质中，加入５滴０．１％的５－Ｂｒ－ＰＡＮ－Ｓ溶液作为指示剂，以ＥＤＴＡ标准溶液对锌进行滴定，溶液颜色由紫红色变为黄色，终点突跃敏锐，准确度高。方法用于锌盐和合金中锌的测＊定，结果满意。
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| 关 键 词： | 锌 络合滴定 |
5-Br-PAN-S as the Indicator for Complexometric Titration of Zinc |
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| Wu Xiaohua,Chen Jianrong,Zhu Chunmiao.5-Br-PAN-S as the Indicator for Complexometric Titration of Zinc[J].Metallurgical Analysis,1998,18(3):1-1. |
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| Authors: | Wu Xiaohua Chen Jianrong Zhu Chunmiao |
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| Affiliation: | Wu Xiaohua*,Chen Jianrong,Zhu Chunmiao |
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| Abstract: | In this paper, an accurate method with 5-Br-PAN-S as the indicator for complexometric titration of zincin the medium of acetic acid -sodium acetate of pH6.0 is described.The end point is sharp.The method has been usedin the determination of zinc in zinc salts and alloys with satisfactory results. |
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| Keywords: | Zinc 1-(5-Bromo-2-pyridylazo)-2-naphthol-6-sulphonic acid Complexometric titration |
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