The fine-structured bands in the spectrumof the diatomic NO molecule
are similar to atomic lines [6], and can therefore be used for analysis
employing the HR-CS AAS technique. The nitrogen-containing compounds
(such as ammonium, nitrate, and urea) frequently used
for manufacturing NPK fertilizers can contribute to the generation of
diatomic NO molecules in a conventional air/acetylene flame. These
different types of nitrogen-containing reagents can therefore be used
to prepare N standard solutions and generate NO