Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (9): 1087-1092.DOI: 10.11944/j.issn.1000-0518.2020.09.200026

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Design and Manufacture of Cerium Test Paper

CUI Yuang, ZHOU Liang, HE Chunxiang*   

  1. School of Chemistry and Chemical Engineering,Liaoning Normal University,Dalian,Liaoning 116029,China
  • Received:2020-01-19 Online:2020-09-01 Published:2020-09-09
  • Contact: HE Chunxiang, professor; E-mail:hcx0224@lnnu.edu.cn; Research interests:chemical sensor
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.U1610114)

Abstract: Ce(III) test paper was prepared for the detection of Ce3+ concentration using medium-speed quantitative filter paper as the base paper, 0.5% mass fraction cetyltrimethylammonium bromide as a modifier for base paper and 0.2% mass fraction xylenol orange as the color reagent adsorbed on base paper sequentially. A standard color chart including 11 colors was made by soaking the test paper in a series of Ce3+ standard solution in the concentration range of 1.000?0-5 to 1.000 mol/L. A semi-quantitative method was established for detection of Ce3+ concentration in the mixed solution of Ce4+/Ce3+. The method was used for detection of Ce3+ in an electrolyte or organic reaction fluid containing Ce4+, hydroquinone, p-hydroxybenzaldehyde and 1,10-dihydroxyanthraquinone in the buffer solution of hexamethylenetetramine at pH 5.0~6.0. The results show that the method has a good accuracy and those coexisting components do not interfere with the determination. The test paper has advantages of simple manufacturing, cheapness, fast detection speed and easy operation. It is applied to the rapid monitoring of Ce3+ concentration in the production process.

Key words: medium-speed quantitative filter paper, modified base paper, xylenol orange, Ce(III) test paper