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Journal of the Brazilian Chemical Society

versión impresa ISSN 0103-5053

Resumen

SILVA, Júlio C. J.; BACCAN, Nivaldo  y  NOBREGA, Joaquim A.. Analytical performance of an inductively coupled plasma optical emission spectrometry with Dual View configuration. J. Braz. Chem. Soc. [online]. 2003, vol.14, n.2, pp. 310-315. ISSN 0103-5053.  http://dx.doi.org/10.1590/S0103-50532003000200020.

The analytical performance of axially and radially viewed inductively coupled plasma optical emission spectrometers (AX-ICP OES and RD-ICP OES, respectively) were evaluated in terms of the Mg II/Mg I ratio, matrix effects, and detection limits (LOD). All solutions were made in either 1% v v-1 nitric acid or in a 10% v v-1 water-soluble tertiary amine solution (CFA-C) adjusted to pH 8. Using a nebulization gas flow-rate of 0.5 L min-1 and applied power of 1.3 kW, Mg II/Mg I ratio was at least 15 in any medium for both configurations. Under robust conditions, plasma processes were practically not affected by the presence of 0.1% m v-1 of Ca, K, or Na in both configurations. However, interference effects were observed with non-robust conditions, mainly with AX-ICP OES in both media. The best detection limits were obtained using AX-ICP OES under robust conditions, with solutions prepared in the amine medium.

Palabras llave : ICP OES; axial view; radial view; robustness; sensitivity; Mg II [Mg I ratio].

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