期刊
ACS SENSORS
卷 1, 期 7, 页码 866-874出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssensors.6b00287
关键词
flexible electronics; wearable biosensors; heavy metals monitoring; sweat; multiplexed sensing; temperature compensation
资金
- NSF Nanomanufacturing Systems
- Office of Science, Office of Basic Energy Sciences, Material Sciences and Engineering Division of the U.S. Department of Energy [DE-AC02-05CH11231]
- Robert N. Noyce Fellowship in Microelectronics
- Japan Society for the Promotion of Science (JSPS) Fellowship
A flexible and wearable microsensor array is described for simultaneous multiplexed monitoring of heavy metals in human body fluids. Zn, Cd, Pb, Cu, and Hg ions are chosen as target analytes for detection via electrochemical square wave anodic stripping voltammetry (SWASV) on Au and Bi microelectrodes. The oxidation peaks of these metals are calibrated and compensated by incorporating a skin temperature sensor. High selectivity, repeatability, and flexibility of the sensor arrays are presented. Human sweat and urine samples are collected for heavy metal analysis, and measured results from the microsensors are validated through inductively coupled plasma mass spectrometry (ICP-MS). Real-time on-body evaluation of heavy metal (e.g., zinc and copper) levels in sweat of human subjects by cycling is performed to examine the change in concentrations with time. This platform is anticipated to provide insightful information about an individual's health state such as heavy metal exposure and aid the related clinical investigations.
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