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.
