高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (S1): 358.

• Molecular Spectroscopy • 上一篇    下一篇

Determination of Mn(Ⅱ) Using l-(2-pyridylazo)-2-naphthol Solid Liquid Extraction Spectrophotometry

WAN Yi-Qun, GUO Lan, SHEN Ling-Xia   

  1. Department of chemistry, Nanchang University, Nanchang 330047, P. R. China
  • 出版日期:1999-12-31 发布日期:1999-12-31

Determination of Mn(Ⅱ) Using l-(2-pyridylazo)-2-naphthol Solid Liquid Extraction Spectrophotometry

WAN Yi-Qun, GUO Lan, SHEN Ling-Xia   

  1. Department of chemistry, Nanchang University, Nanchang 330047, P. R. China
  • Online:1999-12-31 Published:1999-12-31

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摘要：

A procedure is described for the spectrophotometric determination of Mn(Ⅱ) after extraction with molten paraffin. The complex of Mn(Ⅱ) with l-(2-pyridylazo)-2-naphthol can be extracted quantitatively into paraffin in the range of PH=8.5~10.0. After solidified paraffin is dissolved in CHC13, the absorbance is determined at 570nm. Beer's law is obeyed in the range of 0 to lOug Mn/lOml. The linear regression equation is A=0.0032+0.0486C, the relative coefficient r=0.9997.

Abstract:

A procedure is described for the spectrophotometric determination of Mn(Ⅱ) after extraction with molten paraffin. The complex of Mn(Ⅱ) with l-(2-pyridylazo)-2-naphthol can be extracted quantitatively into paraffin in the range of PH=8.5~10.0. After solidified paraffin is dissolved in CHC13, the absorbance is determined at 570nm. Beer's law is obeyed in the range of 0 to lOug Mn/lOml. The linear regression equation is A=0.0032+0.0486C, the relative coefficient r=0.9997.

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