General Information
    • ISSN: 2010-0221
    • Frequency: Bimonthly
    • DOI: 10.18178/IJCEA
    • Editor-in-Chief: Dr. Eldin W. C. Lim
    • Executive Editor: Mr. Ron C. Wu
    • Abstracting/ Indexing: Chemical Abstracts Services (CAS), Ulrich's Periodicals Directory, CABI, DOAJ, Electronic Journals Library, Google Scholar, Engineering & Technology Digital Library, ProQuest, and Crossref
    • E-mail: ijcea@ejournal.net
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Editor-in-chief
Dr. Eldin W. C. Lim
Dept. of Chemical and Biomolecular Engineering,
National University of Singapore, Singapore
IJCEA 2011 Vol.2(6): 381-384 ISSN: 2010-0221
DOI: 10.7763/IJCEA.2011.V2.138

Spectrophotometric Determination of Cerium Using Azocalixarene Derivative in Geological Samples

Le Van Tan and Nguyen Thi Ngoc Le

Abstract—A simple, apid and sensitive spectrophotometric method has been proposed for determination of Cerium(IV) base on Azocalixarene drivertive, 5,11,17,23-tetrakis[(o-carboxyphenyl)azo]-25,26,27,28-tetrahyd roxycalix[4]arene (1). This methode base on the formation of a orange color radical cation upon a reaction of azocalixarene with Cerium(IV) in the acidic solution having maximum absorbance at 515 nm (bathochromic shift of 150 nm). The Beer law in the range of 8.0×10-6 to 3.0×10− 5 mol.L−1 of cerium(IV) and the linear regression equation was determined to be: Absorbance (A) = 0.701×C(10−5 mol L−1 cerium(IV)) + 0.021, r = 0.997, n = 5. The proposed method has been successfully applied to the analysis Cerium in soil samples collected in the Kontum

Index Terms—Cerium; azocalix arene;spectrophotometrys

Le Van Tan, Ho Chi Minh City University of Industry, Viet Nam; Email:Author for correspondence: (e-mail: tanhuaf@yahoo.com)
Nguyen Thi Ngoc Le; Kontum of Pedagogical College, Kotum Province,Viet Nam; (e-mail: ngocle_cdsp_kt@yahoo.com.vn)

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Cite: Le Van Tan and Nguyen Thi Ngoc Le, "Spectrophotometric Determination of Cerium Using Azocalixarene Derivative in Geological Samples," International Journal of Chemical Engineering and Applications vol. 2, no. 6, pp. 381-384, 2011.

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