摘要
本文对溶解氧增强鲁米诺的电化学发光(ECL)行为进行了系统的研究,发现电学参数等因素很大程度地影响溶解氧增强ECL的产生、发光强度及稳定性。通过对电极的预处理,在0.15 mol·L-1的KNO3-中性硼酸缓冲溶液中,-0.4-0.9 V(vs.Ag)的矩形脉冲激励下,溶解氧显著增强鲁米诺的ECL且具有良好的稳定性,线性范围从0-16 mg·L-1,相对标准偏差为0.4％。讨论了溶解氧增强鲁米诺ECL的机理及表面活性剂的影响。
The enhancement of dissolved oxygen for electrochemiluminescence (ECL) behavior of luminol in neutral aqueous solution was studied in this paper. It was obviously revealed that the electrical parameters and some other factors had influence on the enhancement of dissolved oxygen for ECL of luminol. Using an electrode pretreated, in 0.15 mol . L-1 KNO3 -boric acid buffer (pH = 7), the optimal enhanced ECL signal of luminol was obtained, excited by the positive rectangular pulse with the amplitude from - 0.4 V to 0.9 V (vs. Ag). The linear response range was from 0 to 16 mg.L-1 and the relative standard deviation was 0.4%. The mechanism of the enhancement and the effect of the surfactant were also studied.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2003年第5期849-851,共3页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金(20275025)资助
