Determination of(Ⅵ),Cu(Ⅱ)in Aqueous Solution by Liquid-Core Optical Fiber Spectrophotometry

Chem. J. Chinese Universities ›› 1996, Vol. 17 ›› Issue (3): 377.

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Determination of(Ⅵ),Cu(Ⅱ)in Aqueous Solution by Liquid-Core Optical Fiber Spectrophotometry

WANG Ju-Fang¹, LIAO Yuan-Min¹, FENG Ming-Zhao¹, WANG Wei², LIN Jun-Xiu², HE Qu-She², WU Guan-Yan², PAN LI-Ying³, ZHAO Yu-Shan³, HE Tian³

1. Xinjiang Institute of Chemistry, Academia Sinica, Urmaqi 830011;
2. Xinjiang Institute of Physics, Academia Sinica, Urmuqi 830011;
3. Xinjiang Institute of Environment Protetion

Received:1995-03-28 Online:1996-03-24 Published:1996-03-24

Abstract

Abstract: This paper presents the transmission characteristics and spectrum for liquid-core optical fiber filled with low refractive index liquids(n>1.346)and aqueous solutions.The methods are studied for the determination of Cr(Ⅵ),Cu(Ⅱ) in aqueous solutions of about 70% alcohol and 50% dioxane.With the 110 cm liquid-core optical fiber in length,the sensitivities(1/ng·mL^-1)of Cr(Ⅵ), Cu(Ⅱ)are 0.052 and 0.017 respectively;the linear ranges are 0～25,0～24 ng/mLwith RSDbeing_1.0%～4.8%.The Cr in the animal gum and national standard are determined with recoveries of 94%～102%.

Key words: Liquid-core optical fiber, Aqueous solution, Cr(Ⅵ), Cu(Ⅱ)

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WANG Ju-Fang, LIAO Yuan-Min, FENG Ming-Zhao, WANG Wei, LIN Jun-Xiu, HE Qu-She, WU Guan-Yan, PAN LI-Ying, ZHAO Yu-Shan, HE Tian. Determination of(Ⅵ),Cu(Ⅱ)in Aqueous Solution by Liquid-Core Optical Fiber Spectrophotometry[J]. Chem. J. Chinese Universities, 1996, 17(3): 377.

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Determination of(Ⅵ),Cu(Ⅱ)in Aqueous Solution by Liquid-Core Optical Fiber Spectrophotometry

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