Analysis of Ultraviolet Absorbers in Urine Samples by Functionalized Nanoparticles-assisted Electrospray Mass Spectrometry

摘要

The ambient mass spectrometry tor one-droplet analysis was developed in this study. A 3.5 hi solution was dipped on a laboratory-made screen-printed plate coated with silver or graphite gel. The electrospray was performed when the voltage of +5 kV was applied on the surface of the droplet. The ultraviolet obsorbers studied are including 3-[4-methylbenzylidenel-camphor (4-MBC). 5-ethyl-4-(dimelhyldmino)ben7oate [OD-PABA] and 2-bydroxy-4-(octyloxy)- benzophenone (bP-12). The solution containing analytes and nanomaterials was dipped on the screen-printed substrate to evaluate the effect on the ionizotion efficiency.