Spectrophotometric Determination of Scandium(III) with Eriochrome Cyanine R in the Presence of Cetyltrimethylammonium bromide

Cha, Ki-Won; 차기원; Park, Chan-Il; 박찬일; Kim, Jong-Whon; 김종훈

오늘 하루 그만보기

P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

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Vol.9, No.2

PubReader Citation

Spectrophotometric Determination of Scandium(III) with Eriochrome Cyanine R in the Presence of Cetyltrimethylammonium bromide

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

1996, v.9 no.2, pp.139-144

Cha, Ki-Won
Park, Chan-Il
Kim, Jong-Whon

Cha, K., Park, C., & Kim, J. (1996). Spectrophotometric Determination of Scandium(III) with Eriochrome Cyanine R in the Presence of Cetyltrimethylammonium bromide. , 9(2), 139-144.

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Abstract

The spectrophotometric determination method of scandium with eriochrome cyanine R(ECR) and the composition ratio of the complex were investigated in the presence of surfactants. The absorbance increase and red shift of maximum adsorption wavelength of Sc(III)-ECR complex were observed in cetyltrimethylammonium bromide (CTMAB), but those changes were not observed in the sodium dodecyl sulfate(SDS) and Triton X-100. A volume of 5ml of $1{\times}10^{-3}M$ ECR and 10ml of $2{\times}10^{-4}M$ CTMAB are necessary for the determination of $1{\times}10^{-7}{\sim}3.0{\times}10^{-6}M$ Sc(III) at pH 6.5. The apparent molar absorption coefficient of the Sc(III)-ECR-CTMAB, temary complex at 610nm is $5.6{\times}10^5mol^{-1}cm^{-1}L$ and its detection limit is $1.0{\times}10^{-7}M$. The binary complex composition of Sc(III)-ECR is 1:2 and the ternary complex composition of Sc(III)-ECR-CTMAB is 1:3:1.