In this study, a microfluidic trap and mixer devices for microplastics (MPs) harvest and fluorescent tagging were fabricated with polydimethylsiloxane (PDMS) using SU-8 photolithography. In the MPs trap modules grooves were designed and patterned in the microfluidic channel to create turbulence to separate and trap the MPs at the grooves. UV-Vis absorbance analysis demonstrates that the grooved channel (7.5 cm long, 1.8 cm wide, 500 μm high) was an efficient platform to trap and store the 106 μm&lt; mesh sieved polystyrene (PS) MPs up to 95 % removal efficiency with 2 mL/min flow rate. In addition, the mixer with two inlet fluids was designed as a tortuous microfluidic channel for efficient MP fluorescence staining with S-FN and Nile Red. Photoluminescence (PL) and Fourier transform infrared (FT-IR) analysis show that the mixer module was an efficient platform both for two fluorescent labeling dyes of MPs on a short time scale of 10 min. Through this study, a novel lab on a chip for a MP fluorescence labeling was first introduced.

Characterization of microfluidics trap and mixer platform for efficient fluorescent staining of microplastics

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ACS Fall 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.