Graphene oxide nanosheets coupled with paper microfluidics for enhanced on-site airborne trace metal detection.

ABSTRACT: Rapid on-site analysis of airborne trace metals has been heavily favored over traditional methodologies because air pollutants can be altered by environmental, behavioral, and social patterns at any given time and location. However, existing portable approaches are either not capable of performing integrated on-site analysis or not yet practically applicable. Exploiting graphene oxide (GO) in enhancing the analytical performance of paper-based colorimetric detection, for the first time, this paper reports the development of a practically useful portable system for accurate, sensitive on-site characterization of trace metals in ambient particulate matter (PM). The system consists of GO-nanosheet-coated paper devices, unmanned aerial vehicle multiaxial sampling, and cellphone-based colorimet

SUBMITTER: Sun H 

PROVIDER: S-EPMC6369225 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature