Author(s): Neto, JAG ; Silva, JBB ; Neto, R. R. ; Curtius, A. J. ; Souza, I. G.
Date: 2020
Persistent ID: http://hdl.handle.net/11449/195673
Origin: Oasisbr
Subject(s): pneumatic nebulizers; ICP-MS; on-line dilution; pneumatic nebulizers; pneumatic nebulizers; ICP-MS; ICP-MS; on-line dilution; on-line dilution
Made available in DSpace on 2020-12-10T17:59:47Z (GMT). No. of bitstreams: 0 Previous issue date: 1998-07-01
An automatic dispenser based on a flow-injection system used to introduce sample and analytical solution into an inductively coupled plasma mass spectrometer through a spray chamber is proposed. Analytical curves were constructed after the injection of 20 to 750 mu L aliquots of a multielement standard solution (20.0 mu g L-1 in Li, Be, Al, V, Cr, Mn, Ni; Co, Cu, Zn, As, Se, Sr, Ag, Cd, Ba, Tl, Ph) and the acquisition of the integrated transient signals. The linear concentration range could be extended to ca, five decades. The performance of the system was checked by analyzing a NIST 1643d reference material. Accuracy could be improved by the proper selection of the injected volume. Besides good precision (r,s.d, < 2%), the results obtained with the proposed procedure were closer to the certified values of the reference material than those obtained by direct aspiration or by injecting 125 mu L of several analytical solutions and samples.
Univ Estadual Paulista, Inst Quim, Dept Quim Analit, BR-14801970 Araraquara, SP, Brazil
Univ Fed Santa Catarina, Dept Quim, Florianopolis, SC, Brazil
Univ Estadual Paulista, Inst Quim, Dept Quim Analit, BR-14801970 Araraquara, SP, Brazil
