Sensitive and Spectral Interference-Free Determination of Rhodium by Photochemical Vapor Generation Inductively Coupled Plasma Mass Spectrometry.

ABSTRACT: A sensitive method for Rh determination was developed by coupling photochemical vapor generation (PVG) for sample introduction to inductively coupled plasma mass spectrometry (ICPMS). PVG was conducted in a thin-film flow-through photoreactor operated in a flow injection mode from a photochemical medium comprising 10 M HCOOH. PVG efficiency was substantially enhanced by the addition of 10 mg L^-1 Cu²⁺ and 5 mg L^-1 Co²⁺ as mediators as well as 50 mM NaNO₃. The volatile product (likely Rh(CO)₄H) was found to be less stable when in prolonged contact with the liquid medium at the output from the photoreactor. Hence, further enhancement was achieved by introducing an Ar carrier gas near the exit of the photoreactor to minimize the

SUBMITTER: Haslova K 

PROVIDER: S-EPMC11840798 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature