Determination of nitrogen and oxygen and species containing nitrogen by molecular non-thermal excitation spectrometry (MONES) using microwave-induced plasma (MIP) and furnace atomization non-thermal excitation spectrometry (FANES) sources

Abstract

A microwave-induced plasma (MIP) source produced through a surface-wave propagation process (surfatron) and a furnace atomization non-thermal excitation spectrometry source have been used to determine N and O in gaseous and aqueous samples, respectively, through the formation and emission of NH and OH radicals. Water is removed through liquid nitrogen cold trapping and hydrogen is added to the He plasma gas. The spectral characteristics of the two sources have been compared.