Fig. 4From: Non-invasive continuous monitoring of pro-oxidant effects of engineered nanoparticles on aquatic microorganismsReprinted with permission from (Analytical Chemistry 2015; 87: 1536–1543). Copyright (2015) American Chemical SocietyThe presence of scatterers (500 nm polystyrene beads) in the MEAS configuration enhances the OPL and, consequently, lowers the LOD. Principle and transmission measurements of the absorption of phenol red in conventional and MEAS configurations.Back to article page