化工技术与开发
化工技術與開髮
화공기술여개발
TECHNOLOGY & DVELOPMENT OF CHEMICAL INDUSTRY
2013年
12期
7-10
,共4页
修饰电极%碳纳米管%磁性纳米颗粒%牛白蛋白
脩飾電極%碳納米管%磁性納米顆粒%牛白蛋白
수식전겁%탄납미관%자성납미과립%우백단백
modiifed electrode%carbon nano tubes%magnetic nano particles%novine albumin
自制了更新方便的磁性碳纳米管修饰电极，考察了该磁性电极在H2SO4-KCl介质中的还原性以及峰电流的影响因素并成功用于牛白蛋白的测定。实验结果表明，电极反应受吸附控制；在-0.45V条件下，牛白蛋白在4~150pg·mL-1范围内与峰电流成反比，检出限为1.2pg·mL-1，并对反应机理进行探讨，电极反应受吸附控制，电极反应常数和电子转移常数分别为4.6s-1和0.19。
自製瞭更新方便的磁性碳納米管脩飾電極，攷察瞭該磁性電極在H2SO4-KCl介質中的還原性以及峰電流的影響因素併成功用于牛白蛋白的測定。實驗結果錶明，電極反應受吸附控製；在-0.45V條件下，牛白蛋白在4~150pg·mL-1範圍內與峰電流成反比，檢齣限為1.2pg·mL-1，併對反應機理進行探討，電極反應受吸附控製，電極反應常數和電子轉移常數分彆為4.6s-1和0.19。
자제료경신방편적자성탄납미관수식전겁，고찰료해자성전겁재H2SO4-KCl개질중적환원성이급봉전류적영향인소병성공용우우백단백적측정。실험결과표명，전겁반응수흡부공제；재-0.45V조건하，우백단백재4~150pg·mL-1범위내여봉전류성반비，검출한위1.2pg·mL-1，병대반응궤리진행탐토，전겁반응수흡부공제，전겁반응상수화전자전이상수분별위4.6s-1화0.19。
A novel renewable magnetic carbon nano tubes modiifed electrode was fabricated. Both reduction of the modiifed elec-trode in H2SO4-KCl solution and experimental conditions impacting on peak current were investigated. It was found that adsorption was the main influence factor of the electrode processes and concentration of bovine albumin was reversely proportional to the cur-rent at the working potential of-0.45V. The limit of detection was improved to 1.2pg/mL. It was also identiifed that the electrode reaction constant was 4.6 s-1 and the electron transfer constant was 0.19, respectively.
