A new modification method of a Cetyl Trimethyl Ammonium Bromide/Nano-ZnO and Multi-walled Carbon Nanotubes Electrode for Determination of Anti Doping in Urine

2nd International Conference on Design, Materials, and Manufacturing

材料科学;机械制造

Zhao, Zhiwei^1 ; Mu, Shuai^1 ; Zheng, Jie^1 ; Gu, Lingyan^1 ; Shen, Guijun^1 ; Shen, Yuan^2

College of Environmental and Chemical Engineering, Dalian University, Dalian

116622, China^1

Talent Development Office, Dalian University, Dalian

116622, China^2

关键词: Adsorption behavior;    Anti-interference;    Cetyl trimethyl ammonium bromides;    ELectrochemical methods;    Low concentrations;    Modification methods;    Modified electrodes;    Surface adsorption;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/220/1/012009/pdf
DOI  :  10.1088/1757-899X/220/1/012009

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The preparation and application of Cetyl Trimethyl Ammonium Bromide/Nano-ZnO and Multi-walled Carbon Nanotubes (CTAB/ZnO-MWNTs) Modified Electrodes was studied, establishing a new electrochemical method for determination of carteolol hydrochloride in urine. After its pre-enrichment by adsorption and extraction on modified electrodes, electrochemical behaviors of carteolol hydrochloride on the modified electrodes were studied by CV and DPV. The response is linear at the range of 1×10-3∼ 2×10-1g/L, with a detection limit of 2×10-4g/L. Under appropriate conditions, the content of carteolol hydrochloride in urine can be determined directly by the method, which had strong anti-interference ability and the recovery is 96.5% - 110.5%. In addition, extraction and adsorption behaviors of the modified electrodes for carteolol hydrochloride were studied by chronocoulumetry, and the results showed that extraction during the enrichment process played a major role at low concentrations, and contribution of surface adsorption became greater with the increase of concentrations.