01871naa a2200229 a 450000100080000000500110000800800410001902400350006010000200009524502240011526000090033952010540034865300190140265300210142165300120144265300150145465300240146970000180149370000260151170000200153777300840155710471852023-03-13       2005    bl uuuu     u00u1 u    #d7 a10.1016/j.sab.2005.02.0142DOI1 aTREVISAN, L. C.  aUse of factorial design for evaluation of plasma conditions and comparison of two liquid sample introduction systems for an axially viewed inductively coupled plasma optical emission spectrometer.h[electronic resource]  c2005  aA factorial design was applied to evaluate plasma conditions employing the Mg II 280/Mg I 285 nm intensity ratio in an axially viewed inductively coupled plasma optical emission spectrometer using different sample introduction devices: a concentric or a V-groove nebulizer and a cyclonic or a Sturman-Masters spray chamber. Effects of nebulizer gas flow-rate on Mg II/Mg I ratio were different in each introduction system. Robust conditions were obtained at low nebulizer gas flow-rate when using concentric nebulizer with a cyclonic spray chamber or a concentric nebulizer and a Sturman-Masters spray chamber. However, when using a V-groove nebulizer with a Sturman-Masters spray chamber, Mg II/Mg I ratio increased at high nebulizer gas flow-rates. Recovery experiments for a milk standard reference material diluted in water-soluble tertiary amines in both robust and non-robust conditions indicated that the robust condition was reached at higher nebulizer gas flow-rates and led to better accuracy and precision when using a V-groove nebulizer.  aAxially viewed  aFactorial design  aICP OES  aMg II/Mg I  aSample introduction1 aVIEIRA, E. C.1 aNOGUEIRA, A. R. de A.1 aNÓBREGA, J. A.  tSpectrochimica Acta Part B: Atomic Stectroscopygv. 60, n. 5, p. 575-581, 2005.