Use of factorial design for evaluation of plasma conditions and comparison of two liquid sample introduction systems for na axially viewed inductively coupled plasma optical emission spectrometer.
AUTOR(ES)
TREVISAN, L. C.
FONTE
Spectrochimica Acta Part B v. 60
DATA DE PUBLICAÇÃO
2011
RESUMO
A 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.
ASSUNTO(S)
axially viewed icp oes factorial design mg ii/mg i sample introduction
ACESSO AO ARTIGO
http://www.alice.cnptia.embrapa.br/handle/doc/47185Documentos Relacionados
- Inductively coupled plasma optical emission spectrometry with axially viewed configuration: an overview of applications
- Avaliação das condições operacionais de espectrômetro de emissão óptica com plasma acoplado indutivamente com configuração axial.
- Determination of metals in Brazilian coconut water using an inductively coupled plasma optical emission spectrometer
- Analysis of liquid stevioside and cyclamate-saccharin dietetic sweeteners by inductively coupled plasma optical emission spectrometry without sample treatment
- Use of Doehlert design for optimizing the digestion of beans for multi-element determination by inductively coupled plasma optical emission spectrometry