化学
安培法
电化学气体传感器
碳酸氢钠
聚苯胺
电化学
可穿戴计算机
电极
色谱法
计算机科学
嵌入式系统
有机化学
聚合
物理化学
聚合物
作者
Julien Biscay,Ewan Findlay,Lynn Dennany
出处
期刊:Talanta
[Elsevier]
日期:2021-03-01
卷期号:224: 121815-121815
被引量:24
标识
DOI:10.1016/j.talanta.2020.121815
摘要
Rapid, periodic monitoring and detection of ethanol (EtOH) after consumption via a non-invasive measurement has been an area of increased research in recent years. Current point-of-care or on-site detection strategies rely on single use sensors which are inadequate for monitoring during a longer period. A low cost, portable and novel approach is developed here for real-time monitoring over several days utilising electrochemical techniques. The sensor shows oxidation of the ethanol in phosphate buffer and artificial sweat using the amperometric response from the application of +0.9 V to the polyaniline modified screen printed electrode using 1 mM EtOH as the averaged amount of EtOH eliminated in sweat after the consumption of one alcoholic beverage. Our enzyme based electrochemical sensor exhibits a qualitative assessment of the presence of EtOH in small volumes (≤40 μL) of 0.1 M sodium bicarbonate and subsequently artificial sweat, with 50 measurements taken daily over 11 days. While quantitative information is not obtained, the sensor system exhibits excellent stability after 3 months’ dried storage in this complex biological matrix in an oxygen free cabinet. This addresses one of the key challenges for enzyme based electrochemical sensors, namely, the ability for real-time monitoring in complex biological matrices. The qualitative response illustrates the potential for this sensor to be exploited by non-experts which suggests the promise for their wider application in next-generation wearable electronics necessary for alcohol monitoring.
科研通智能强力驱动
Strongly Powered by AbleSci AI