Optoelectronic nose based on an origami paper sensor for selective detection of pesticide aerosols.

ABSTRACT: This study introduces an applicable colorimetric sensor array for the detection of pesticides in the vapor phase. The array consisted of six metal nanoparticles spotted on the piece of filter paper. 3D-origami pattern was used for the fabrication of a paper-based sensor to decrease the effect of the nanoparticles leaching after exposure to analytes. Exposure to pesticide aerosols caused changes in the color of the array due to the aggregation of nanoparticles. These changes provided selective responses to thion pesticides such as malathion, parathion, chlorpyrifos, and diazinon. The sensing assay could also differentiate between aliphatic and aromatic thions and discriminate amine-containing compounds from the other studied analytes. These finding results are clearly confirmed by both visu

SUBMITTER: Bordbar MM 

PROVIDER: S-EPMC7560735 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature