Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (S1): 368.
• Molecular Spectroscopy • Previous Articles Next Articles
SUN Jia-Juan, BAI Yu-Wei, ZHAO Wei, LIU Bin
Online:
Published:
Supported by:
supported by the Science Research Foundation of Shaaxi Educational Committe
Abstract:
There has been study on heterocyclicazo reagent for the determination of microamount of nickel,but no study on the color reactron of nickel with a new chromogenic reagent 1- (5 -nitro - 2 - pyridylazo) - 2.7 - dihydroxy - naphthalene (5- NO2 - PADN). So, here is a systematic study on condition under which the color reaction takes place. It proved that within PH 5.5~6.5,the maximnm absotption of the reagent lies at 460nm, that of the 2:1 turquoise chelate by 5 - NO2 - PADN with nickel (Ⅱ) together is 650nm, and the apparent absorptivity is 1.02×105 L · mol-1 · cm-1. The proposed method can be applied in the standard steel and the determination of microamounts of nickel in ore with satisfactory results.
TrendMD:
SUN Jia-Juan, BAI Yu-Wei, ZHAO Wei, LIU Bin. A Study on the Color Reaction of Nickel with a New Chromogenic Reagent 1- (5-Nitro-2-Pyridylazo) - 2.7 - Dihydroxy - naphthalene and its Application[J]. Chem. J. Chinese Universities, 1999, 20(S1): 368.
0 / / Recommend
Add to citation manager EndNote|Ris|BibTeX
URL: http://www.cjcu.jlu.edu.cn/EN/
http://www.cjcu.jlu.edu.cn/EN/Y1999/V20/IS1/368