基于Ru(bpy)2+3/AuNPs/SWCNTs/腺苷适配体电化学发光生物传感器用于腺苷的检测

利用AuNPs/Nafion复合膜技术固定Ru(bpy)2+3,采用羧基化碳纳米管固定氨基化腺苷适配体,制备腺甘电化学发光生物传感器.采用循环伏安法和电化学发光法对传感器进行表征.结果表明,此传感器具有良好的稳定性和重现性.腺苷与传感器作用后,腺苷与其适配体形成G四面体结构,Ru(bpy)2+3的电化学发光强度降低.在最佳实验条件下,电化学发光强度降低量与腺苷浓度的负对数在1.0×10-11~1.0×10-7 mol/L范围内呈良好的线性关系,线性方程为ΔIECL=-890lgC-5050,检出限(S/N=3)为5.0 × 10-12 mol/L.对1.0 × 10-10 mol/L腺苷平行测...

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Published in	分析化学 Vol. 45; no. 9; pp. 1353 - 1359
Main Authors	樊雪梅, 王书民, 李哲建, 贾雪艳, 郑行望
Format	Journal Article
Language	Chinese
Published	商洛学院化学工程与现代材料学院/陕西省尾矿资源综合利用重点实验室,商洛,726000%西北师范大学化学化工学院,兰州,730070%3(陕西师范大学化学化工学院,西安,710062 2017
Subjects	电化学发光 Adenosine 腺苷适配体腺苷 Adenosine aptamer Electrogenerated chemiluminescence
Online Access	Get full text
ISSN	0253-3820
DOI	10.11895/j.issn.0253-3820.170216

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Abstract	利用AuNPs/Nafion复合膜技术固定Ru(bpy)2+3,采用羧基化碳纳米管固定氨基化腺苷适配体,制备腺甘电化学发光生物传感器.采用循环伏安法和电化学发光法对传感器进行表征.结果表明,此传感器具有良好的稳定性和重现性.腺苷与传感器作用后,腺苷与其适配体形成G四面体结构,Ru(bpy)2+3的电化学发光强度降低.在最佳实验条件下,电化学发光强度降低量与腺苷浓度的负对数在1.0×10-11~1.0×10-7 mol/L范围内呈良好的线性关系,线性方程为ΔIECL=-890lgC-5050,检出限(S/N=3)为5.0 × 10-12 mol/L.对1.0 × 10-10 mol/L腺苷平行测定11次,相对标准偏差为2.7%.用于尿液中腺苷的测定,加标回收率在 97.1%~110.0%之间.
AbstractList	利用AuNPs/Nafion复合膜技术固定Ru(bpy)2+3,采用羧基化碳纳米管固定氨基化腺苷适配体,制备腺甘电化学发光生物传感器.采用循环伏安法和电化学发光法对传感器进行表征.结果表明,此传感器具有良好的稳定性和重现性.腺苷与传感器作用后,腺苷与其适配体形成G四面体结构,Ru(bpy)2+3的电化学发光强度降低.在最佳实验条件下,电化学发光强度降低量与腺苷浓度的负对数在1.0×10-11~1.0×10-7 mol/L范围内呈良好的线性关系,线性方程为ΔIECL=-890lgC-5050,检出限(S/N=3)为5.0 × 10-12 mol/L.对1.0 × 10-10 mol/L腺苷平行测定11次,相对标准偏差为2.7%.用于尿液中腺苷的测定,加标回收率在 97.1%~110.0%之间.
Abstract_FL	Based on the AuNPs/Nafion composite membrane technology and immobilization of amino adenosine aptamer using carboxyl carbon nanotubes on the surface of a glassy carbon electrode, a electrochemiluminescence sensor was preparated.The sensor was characterized by cyclic voltammetry and electrochemical luminescence.The result showed that the sensor had a good stability and reproducibility.Adenosine and adenosine aptamer could form G-tetrahedral structure, leading a decrease of ECL intensity.Under the optimum experimental conditions, the relative ECL intensity showed a good linear relationship to the negative logarithm of adenosine concentration in the range of 1.0×10-11-1.0×10-7 mol/L, the linear equations was ΔIECL=-890lgC-5050 with a detection limit of 5.0×10-12 mol/L.The RSD was 2.7% in 11 times measurement of adenosine (1.0×10-10 mol/L).The recovery was 97.1%-110.0% in the determination of real adenosine sample.
Author	郑行望贾雪艳樊雪梅李哲建王书民
AuthorAffiliation	商洛学院化学工程与现代材料学院/陕西省尾矿资源综合利用重点实验室,商洛,726000%西北师范大学化学化工学院,兰州,730070%3(陕西师范大学化学化工学院,西安,710062
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Author_FL	JIA Xue-Yan ZHENG Xing-Wang FAN Xue-Mei LI Zhe-Jian WANG Shu-Min
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DocumentTitle_FL	Determination of Adenosine Based on Ru(bpy)2+3/AuNPs/SWCNTs/Adenosine Aptamer Electrochemiluminescence Sensor
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Title	基于Ru(bpy)2+3/AuNPs/SWCNTs/腺苷适配体电化学发光生物传感器用于腺苷的检测
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