Pneumatic nebulizer as a dilution chamber in a flow-injection system for multielement analysis by ICP-MS
| Autor: | Neto, JAG, Silva, JBB, Neto, R. R., Curtius, A. J., Souza, I. G. |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Universidade Federal de Santa Catarina (UFSC) |
| Jazyk: | portugalština |
| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | Web of Science Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | 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 |
| Databáze: | OpenAIRE |
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