Determination of copper,iron and zinc in spirituous beverages by total reflection X-ray fluorescence spectrometry |
| |
| Affiliation: | 1. Centro Atómico Constituyentes Comisión Nacional de Energía Atómica, Avda. General Paz 1499, (B1650KNA) V. Maipú, Pcia. Buenos Aires, Argentina;2. Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín, Martín de Irigoyen 3100 (1650) Gral. San Martín, Pcia. Buenos Aires, Argentina;3. CONICET, Godoy Cruz 2290, (C1425FQB), C.A. Buenos Aires, Argentina;4. Instituto de Arqueología Facultad de Filosofía y Letras Universidad de Buenos Aires, 25 de mayo 217 (C1002ABE), Argentina;1. University of Belgrade, Faculty of Physical Chemistry, Studentski trg 12-16, 11158 Belgrade, 118, P.O. Box 47, Serbia;2. The Institute of Archaeology, Kneza Mihaila 35/IV, 11000 Belgrade, Serbia;3. IMS Institute, Bulevar vojvode Mišića 43, 11000 Belgrade, Serbia;4. Department of Chemistry, Durham University, Durham DH1 3LE, UK;5. CSIRO Minerals, Box 312, Clayton South 3169, Victoria, Australia;6. Australian Synchrotron, 800 Blackburn Road, Clayton, VIC 3168, Australia;1. Laboratório de Paleoparasitologia, Departamento de Endemias Samuel Pessoa/Escola Nacional de Saúde Pública Sergio Arouca/Fundação Oswaldo Cruz (DENSP/ENSP/FIOCRUZ), Rua Leopoldo Bulhões, 1480, Manguinhos, Rio de Janeiro, RJ 21041-210, Brazil;2. Laboratório de Parasitologia, Departamento de Microbiologia e Parasitologia/Universidade Federal Fluminense (MIP/UFF), Rua Professor Ernani Pires de Melo, 101, Niterói, RJ 24210-130, Brazil;3. Departamento de Geologia e Paleontologia, Museu Nacional/Universidade Federal do Rio de Janeiro (MN/UFRJ), Quinta da Boa Vista, s/n, Rio de Janeiro, RJ 20940-040, Brazil, |
| |
| Abstract: | The concentration of copper in traditional homemade alcoholic distillates produced in Venezuela (Cocuy de Penca) were determined by total reflection X-ray fluorescence (TXRF) using vanadium as internal standard. The results were compared to those obtained by flame atomic absorption spectrometry (FAAS). Three preparative methods of addition of vanadium were compared: classical internal standard addition, ‘layer on layer’ internal standard addition and in situ addition of internal standard. The TXRF procedures were accurate and the precision was comparable to that obtained by the FAAS technique. Copper levels were above the maximum allowed limits for similar beverages. Zinc and iron in commercial and homemade distilled beverages were also analyzed by TXRF with in situ addition of internal standard demonstrating the usefulness of this technique for trace metal determination in distillates. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
