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硼砂存在下茜素红S作为络合滴定锌指示剂的研究
Study on alizarin red S as an indicator of the complexometric titration of zinc in borax buffer solution
【摘要】 研究了在硼砂缓冲体系中茜素红S(ARS)作为络合滴定锌指示剂的分析性能.结果表明,在pH 9.2的硼砂缓冲体系中,加入6滴ARS指示剂,用EDTA标准溶液进行目视滴定,滴定终点溶液由红色变为亮黄色,变色敏锐,准确度较高,具有一定的应用价值.
【Abstract】 Alizarin red S as an indicator for the complexometric titration of zinc was studied in borax buffer solution.The results showed that the end-point for the titration of zinc with six drops of the reagent was sharper in pH 9.2 borax buffer solution.The color of solution at the end-point changed from red to light yellow.The method had been successfully used to determinate zinc in zinc salt and zinc metal with satisfactory results.
- 【文献出处】 浙江师范大学学报(自然科学版) ,Journal of Zhejiang Normal University(Natural Sciences) , 编辑部邮箱 ,2006年01期
- 【分类号】O655.25
- 【被引频次】2
- 【下载频次】110