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连续滴定法测定甘氨酸铝锆中铝和锆的含量 被引量:1

Determination on Content of Aluminum and Zirconium in Aluminum zirconium glycine by Continuous Titration Method
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摘要 采用连续滴定法测得甘氨酸铝锆中铝和锆的含量。采用EDTA络合滴定的实验方案,先将甘氨酸铝锆固体粉末配制成溶液,并将溶液的pH值调节在0.5~1之间,以二甲酚橙为指示剂,用EDTA滴定测得锆的含量;再将此溶液的pH值调节在5~6之间,然后加入过量的EDTA溶液,让铝离子与EDTA充分络合,最后过量的EDTA用硫酸锌标准溶液进行返滴定,从而测得铝离子的含量。实验证明,该法简便,结果准确。 To determine the content of aluminum and zirconium in aluminum zirconium glycine by continuous titration.To use the EDTA complexometric titration experiment scheme.Firstly, to compound aluminum zirconium glycine solid pow- der into solution, and regulate pH value of the solution in 0.5 - 1, to measure the content of zirconium by EDTA two xyle- nol orange as indicator.Secondly, to adjust the solution pH value in 5 ~ 6,and then join the excess EDTA solution, let the aluminum ion with EDTA fully complex.Finally, to back titrat the excessive EDTA with zinc sulfate standard solution,and measure the content of aluminum ion. Experiments showed that the method is simple and accurate.
作者 骆丽君
出处 《河北化工》 2012年第1期67-68,72,共3页 Hebei Chemical Industry
关键词 甘氨酸铝锆 连续滴定法 含量 aluminum zirconium glycine continuous titration aluminum zirconium content
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