Antioxidant Sensors Based on Iron Diethylenetriaminepentaacetic Acid, Hematin, and Hemoglobin Modified TiO2 Nanoparticle Printed Electrodes

	Antioxidant Sensors Based on Iron Diethylenetriaminepentaacetic Acid, Hematin, and Hemoglobin Modified TiO2 Nanoparticle Printed Electrodes
	Guo QQ ; Ji SJ ; Yue QL ; Wang L ; Liu JF ; Jia JB
刊名	analytical chemistry
	2009
卷号	81 期号:13 页码:5381-5389
关键词	MODIFIED MERCURY-ELECTRODE DNA-DAMAGE ELECTROCHEMICAL BIOSENSOR HYDROGEN-PEROXIDE SUPEROXIDE-DISMUTASE PROTEIN ADSORPTION FREE-RADICALS HUMAN-DISEASE VITAMIN-E CAPACITY
ISSN号	0003-2700
通讯作者	liu jf
中文摘要	antioxidant amperometric sensors based on iron-containing complexes and protein modified electrodes were developed. indium tin oxide glass was printed with tio2 nanoparticles, onto which iron-containing compounds and protein were adsorbed. when applied with negative potentials, the dissolved oxygen is reduced to h2o2 at the electrode surface, and the h2o2 generated in situ oxidizes fe-ii to fe-iii, and then electrochemical reduction of fe-iii therefore gives rise to a catalytic current. in the presence of antioxidants, h2o2 was scavenged, the catalytic current was reduced, and the decreased current signal was proportional to the quantity of existing antioxidants. a kinetic model was proposed to quantify the h2o2 scavenging capacities of the antioxidants. with the use of the sensor developed here, antioxidant measurements can be done quite simply: put the sensor into the sample solutions (in aerobic atmosphere), perform a cathodic polarization scan, and then read the antioxidant activity values. the present work can be complementary to the previous studies of antioxidant sensor techniques based on oh radicals and superoxide ions scavenging methods, but the sensor developed here is much easier to fabricate and use.
收录类别	SCI
语种	英语
WOS记录号	WOS:000267609500037
公开日期	2010-06-18
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/12611]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Guo QQ,Ji SJ,Yue QL,et al. Antioxidant Sensors Based on Iron Diethylenetriaminepentaacetic Acid, Hematin, and Hemoglobin Modified TiO2 Nanoparticle Printed Electrodes[J]. analytical chemistry,2009,81(13):5381-5389.
APA	Guo QQ,Ji SJ,Yue QL,Wang L,Liu JF,&Jia JB.(2009).Antioxidant Sensors Based on Iron Diethylenetriaminepentaacetic Acid, Hematin, and Hemoglobin Modified TiO2 Nanoparticle Printed Electrodes.analytical chemistry,81(13),5381-5389.
MLA	Guo QQ,et al."Antioxidant Sensors Based on Iron Diethylenetriaminepentaacetic Acid, Hematin, and Hemoglobin Modified TiO2 Nanoparticle Printed Electrodes".analytical chemistry 81.13(2009):5381-5389.