Journal article
Wearable Microsensor Array for Multiplexed Heavy Metal Monitoring of Body Fluids
W Gao, HYY Nyein, Z Shahpar, HM Fahad, K Chen, S Emaminejad, Y Gao, LC Tai, H Ota, E Wu, J Bullock, Y Zeng, DH Lien, A Javey
ACS Sensors | Published : 2016
Abstract
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 ..
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Awarded by National Science Foundation
Funding Acknowledgements
This work was supported by NSF Nanomanufacturing Systems for Mobile Computing and Energy Technologies (NASCENT) Center. The sensor fabrication was performed in the Electronic Materials (E-MAT) laboratory funded by the Director, Office of Science, Office of Basic Energy Sciences, Material Sciences and Engineering Division of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. K.C. acknowledges support from the Robert N. Noyce Fellowship in Microelectronics. H.O. acknowledges support from the Japan Society for the Promotion of Science (JSPS) Fellowship.