Analytical performance of an inductively coupled plasma optical emission spectrometry with Dual View configuration

• Main Authors: Silva Júlio C. J., Baccan Nivaldo, Nóbrega Joaquim A.
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2003-01-01
• Series: Journal of the Brazilian Chemical Society
• Subjects: ICP OES; axial view; radial view; robustness; sensitivity; Mg II/Mg I ratio
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=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.