A simplified method for determining titanium from TiO2 nanoparticles in fish tissue with a concomitant multi-element analysis

► An improved method for determining Ti from TiO2 NPs in fish tissue was established. ► The method also allows simultaneous multi-element analysis in the same samples. ► Precision and accuracy within acceptable limits for routine metal analysis in fish. ► Cost and time-effective with potential uses in ecotoxicology and food safety.