Flow-injection electrogenerated chemiluminescence detection of hydrazine based on its in-situ electrochemical modification at a pre-anodized platinum electrode.
In this paper. it was found that the enhancing effect of hydrazine on the weak electrogenerated chemiluminescence (ECL) signal of the electrooxidation of luminol at a pre-anodized platinum electrode was stronger than that of hydrazine at a bare platinum electrode. Based on this finding and the combination of this finding with a flow-injection technique, a novel, sensitive and selective ECL method for hydrazine was developed. Under the optimum experimental conditions, the relative ECL intensity was linear with hydrazine concentration over the range 2.0 x 10(-8) - 5.0 x 10(-5) mol L(-1), with a detection limit of 6.0 x 10(-9) mol L(-1).
Zheng
Xingwang
X
College of Chemistry and Materials Science, Shaanxi Normal University, Xi'an, PR China. zhengxw@snnu.edu.cn
Zhang
Zhujun
Z
Guo
Zhihui
Z
Wang
Qi
Q
D004566:Electrodes; D004785:Environmental Pollutants / Q000032:analysis*; D017022:Flow Injection Analysis; D006834:Hydrazines / Q000032:analysis*; D008163:Luminescent Measurements; D008165:Luminol; D010984:Platinum
D004785:Environmental Pollutants; D006834:Hydrazines; D010984:Platinum; D008165:Luminol