Acknowledgement
Supported by : National Science Foundation of China
Analytical Science and Technology (분석과학)
- Volume 8 Issue 4
- /
- Pages.457-460
- /
- 1995
- /
- 1225-0163(pISSN)
- /
- 2288-8985(eISSN)
Determination of Chromium(VI) and Copper(II) in Organic Solvent - Solution by Liquid Core Optical Fiber Spectrophotometry
- Wang, JuFang (Xinjiang Institute of Chemistry, Chinese Academy of Science) ;
- Fen, Minzhao (Xinjiang Institute of Chemistry, Chinese Academy of Science) ;
- Wei, Wang (Xinjiang Institute of Physics, Chinese Academy of Science) ;
- He, Qushe (Xinjiang Institute of Physics, Chinese Academy of Science) ;
- Wu, Guanyan (Xinjiang Institute of Physics, Chinese Academy of Science)
- Published : 1995.12.25
Abstract
A new hollow fiber filled with the lower refractive index liquid as core constructs a liquid core optical fiber(LCOF). The LCOF have been used as colorimetric cell to determine elements Cr and Cu in the presence of 70%- 50% ethanol or 50% dioxane aqueous solution, based on colored complex of Chromium(VI) with Diphenycarbazid(DPC) and copper with Chromaurd S(CAS) respectively. The sensitivity (1/ng/ml) of calibration curve of Cr and Cu are 0.052, 0.017 over the range 0 - 25, 0 - 24(ng/ml) respectively. The Cr in the animal gum and Nation Standard of China are determined with recoveries of 94 - 102%.