期刊
TALANTA
卷 182, 期 -, 页码 549-557出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2018.02.005
关键词
Electrochemistry; Screen printed electrodes; Au nanoparticles; Lead; Trace metals; Textile sensors
资金
- Ministerio de Ciencia e Innovacion (MICINN) [TEC2013-405661-P]
- Ministerio de Economia y Competitividad (MINECO) [RTC-2015-4077-2]
- European Regional Development Fund (FEDER) [MUSSEL RTC-2015-4077-2]
An anodic stripping voltammetric method is reported in this study for the determination of sub-nanomolar Pb concentration using disposable sensors, each consisting of three (counter, working and reference) screen-printed electrodes. Sensor performance was optimized for the determination of Pb through several surface modifications, by using single-walled carbon nanotubes, electro-reduced graphene oxide and gold nanoparticles. A scanning electron microscopy study of the deposition of electrogenerated gold nanoparticles of various sizes on the working electrode surface showed that spherical nanoparticles of around 100 nm provided the best results. The modification of working electrodes with graphene and gold nanoparticles permitted the determination of Pb2+ in seawater (Detection Limit: 3.21.10(-10) M) without modifying the pH of the sample. The electrode systems were printed on both rigid and textile backing materials, to observe the influence of those materials on the final performance of the sensor.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据