CAJ | 학술논문

用循环伏安法研究了苏丹Ⅱ与牛血红蛋白(BHb)在碳纳米管(CNTs)修饰玻碳(GC)电极上的电化学行为,发现苏丹Ⅱ在CNTs修饰的GC(CNTs/GC)电极上能进行准可逆的电化学反应,式量电位E~(0′)为55mV.而在BHb/CNTs/GC电极上,苏丹Ⅱ电化学反应也是准可逆的,但E~(0′)为70mV,正移了15mV,表明苏丹Ⅱ与BHb发生了相互作用.苏丹Ⅱ与BHb的相互作用还与溶液pH有关,在pH为4.5时,它们的相互作用最强.
용순배복안법연구료소단Ⅱ여우혈홍단백(BHb)재탄납미관(CNTs)수식파탄(GC)전겁상적전화학행위,발현소단Ⅱ재CNTs수식적GC(CNTs/GC)전겁상능진행준가역적전화학반응,식량전위E~(0′)위55mV.이재BHb/CNTs/GC전겁상,소단Ⅱ전화학반응야시준가역적,단E~(0′)위70mV,정이료15mV,표명소단Ⅱ여BHb발생료상호작용.소단Ⅱ여BHb적상호작용환여용액pH유관,재pH위4.5시,타문적상호작용최강.
The electrochemical behavior of SudanⅡ with BHb was investigated at the CNTs modified GC electrode using the cyclic voltammetry. It was found SudanⅡ can undergo a quasi-reversible electrochemical reaction at the CNTs/GC electrode. The formal potential, E~(0′)is 55mV. At the BHb/CNTs/GC electrode, the electrochemical reaction of SudanⅡis also quasi-reversible. However, E~(0′)is 70mV. It is positively shifted 15mV, comparing with that at the CNTs/GC electrode. This demonstrated that SudanⅡ has interacted with BHb. The interaction between SudanⅡ and BHb is also related to the pH of the solution. When the pH of the solution is 4.5, their interaction is the strongest.