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  • Chem Sci Trans., 2014, 3(3),  pp 1023-1026  

    DOI:10.7598/cst2014.803

    Research Article

    Spectrophotometric Determination of Nickel with Chlorophosphonazo-III

  • XIAO-DONG LI1* and QING-ZHOU ZHAI2
  • 1Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, 5088 Xincheng Street, Changchun 130118, JiLin Province, P. R. China
    2Research Center for Nanotechnology, Changchun University of Science and Technology, Changchun 130022, 7186 Weixing Road, P. R. China
  • Abstract

    The optimum conditions for spectrophotometric method for the determination of Ni2+ with chlorophosphonazo-III (CPA-III) were established and the nickel content in water samples has been successfully determined. In a pH 5.5 acetic acid-sodium acetate buffer medium, CPA-III and Ni2+2+ formed a 1:3 green blue complex and the maximum absorption wavelength of the complex is at 620 nm. Ni2+ content in a range of 0.1~3.5 μg/mL and absorbance shows a good linear relationship. The apparent molar absorption coefficient of method is e620nm = 1.40104 L mol-1 cm-1and the detection limit is 0.075 μg/mL.

    Keywords

    Nickel, Chlorophosphonazo-III, Spectrophotometry, Water sample

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