Effect of Amphoteric Zn2+ on the Determination of B2O3 Content in Glass

Yong Zhi Bai; Hong Yan Guan; Jin Hua Cui

doi:10.4028/www.scientific.net/KEM.680.289

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 680Effect of Amphoteric Zn2+ on the Determination of...

Effect of Amphoteric Zn²⁺ on the Determination of B₂O₃ Content in Glass

Abstract:

The amphoteric ZnO can affect the titration of B₂O₃ content in glass since the Zn²⁺ will react with standard NaOH solution during the acid-base titration process and the result will be slightly higher sequentially. In this paper, the elimination of amphoteric Zn²⁺ was carried out by means of carbonate and Zn (OH)₂ precipitation method. Results show that the optimal pH value for Zn (OH)₂ precipitation is between 9~10. Verification test under borosilicate glass standard substance indicates that this method shows great applicability and accuracy in the determination of B₂O₃ content in Zn containing glass.

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Periodical:

Key Engineering Materials (Volume 680)

Pages:

289-292

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.680.289

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Online since:

February 2016

Authors:

Yong Zhi Bai*, Hong Yan Guan, Jin Hua Cui

Keywords:

Acid-Base Titration Method, B₂O₃ Determination, Borosilicate Glass Standard Substance, Glass, Zn²⁺

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References

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