Journal of the Brazilian Chemical Society
versão impressa ISSN 0103-5053
DONATI, George L.; AMAIS, Renata S. e NOBREGA, Joaquim A.. Strategies to improve accuracy and sensitivity in phosphorus determinations by inductively coupled plasma quadrupole mass spectrometry. J. Braz. Chem. Soc. [online]. 2012, vol.23, n.4, pp. 786-791. ISSN 0103-5053. http://dx.doi.org/10.1590/S0103-50532012000400026.
The collision/reaction interface with He introduced through the skimmer at 100 mL min-1 is employed to improve accuracy in 31P+ determinations by ICP-QMS. The 31P16O+ determination in cool plasma conditions result in limits of detection 55-fold lower. This strategy may be an interesting alternative for high ionization potential elements such as P.
Palavras-chave : collision/reaction interface; dissociation energy; H2 reactivity; 31P16O+; thermodynamics.