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《Chinese Journal of Spectroscopy Laboratory》 2000-06
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Study on Color Reaction of Copper(Ⅱ) with 5-(H-Acidazo)-8- Aminoquinoline and its Application in Tobacco Analysis

LI Zhong SHI Hong Lin WANG Lan JIANG Ci Qing YANG Guang Yu (Analytical Laboratory of Yunnan Academy of Tobacco Science,No.41 Keyi Lu,Kunming 650106,P.R.China )  
The color reaction of copper(Ⅱ) with 5 (H Acidazo) 8 Aminoquinoline(HAQ) was studied.In the presence of pH=4.2 buffer solution and emulgent OP ,HAQ can react with copper(Ⅱ) to form a stable 2∶1 complex.The molar absorptivity is 4.87×10 4L·mol -1 ·cm -1 at 550nm.Beer's law is obeyed in the range of 0—16μg/25mL.This method can be applied to determining copper in tobacco with satisfactory results.
【CateGory Index】: O657.32
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