Artículo
Abstract:
This work describes the development of a new analytical procedure able to determine gold by thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS) using nickel tubes (NiT) and quartz tubes (QT) as atomization cells. Experiments involving changes in the flow injection operational parameters, reagent concentrations and sizes of the QT were performed in order to optimize sensitivity. Under the same operational conditions, it was observed that the employment of QT increases the sensitivity of gold determination when compared to the nickel tube. Since solutions of highly concentrated hydrochloric acid showed the best performance as carriers, quartz tubes were also preferred due to its greater tolerance to corrosion by mineral acids in comparison to NiT. In addition, changes in the internal diameter of the QT revealed an important improvement in sensitivity for smaller tubes. Under optimized conditions the main figures of merit showed values close to that of graphite furnace atomic absorption spectrometry with the addition of an excellent improvement of the sample throughput. They are: LOD (3 s): 0.004 μg mL - 1, sensitivity: 0.306 (μg mL - 1) - 1, RSD% (n = 10, 1 μg mL - 1): 2.5, linear range: 0.01-4 μg mL - 1 and sample throughput: 72 h - 1. This new method was employed for the determination of gold in homeopathic medicines with no need of sample digestion. Validation of the analytical results will be shown. A full discussion of the most relevant findings regarding the role of the atomization cell as a strategic key for improving sensitivity will be also provided. © 2012 Elsevier B.V. All rights reserved.
Registro:
| Documento: | Artículo |
| Título: | Evaluation of quartz tubes as atomization cells for gold determination by thermospray flame furnace atomic absorption spectrometry |
| Autor: | Morzan, E.; Piano, O.; Stripeikis, J.; Tudino, M. |
| Filiación: | Laboratorio de Análisis de Trazas, INQUIMAE, Ciudad Universitaria, Pabellón 2, (1428) Buenos Aires, Argentina |
| Palabras clave: | Flame furnace atomic absorption spectrometry; Gold determination; Homeopathic medicine; Quartz tube atomizer; Thermospray; Flame furnace; Gold determination; Homeopathic medicines; Quartz tube atomizers; Thermospray; Atomic absorption spectrometry; Atomization; Gold; Hydrochloric acid; Nickel; Optimization; Quartz; Tubes (components) |
| Año: | 2012 |
| Volumen: | 77 |
| Página de inicio: | 58 |
| Página de fin: | 62 |
| DOI: | http://dx.doi.org/10.1016/j.sab.2012.07.008 |
| Título revista: | Spectrochimica Acta - Part B Atomic Spectroscopy |
| Título revista abreviado: | Spectrochim. Acta Part B At. Spectrosc. |
| ISSN: | 05848547 |
| CODEN: | SAASB |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05848547_v77_n_p58_Morzan |
Referencias:
- Gáspár, A., Berndt, H., Beam injection flame furnace atomic absorption spectrometry: A new flame method (2000) Anal. Chem., 72, pp. 240-246
- Nascentes, C.C., Kamogawa, M.Y., Fernandes, K.G., Arruda, M.A.Z., Nogueira, A.R.A., Nóbrega, J.A., Direct determination of Cu, Mn, Pb, and Zn in beer by thermospray flame furnace atomic absorption spectrometry (2005) Spectrochim. Acta Part B, 60, pp. 749-753
- Tarley, C.R.T., Barbosa, A.F., Segatelli, M.G., Figueiredo, E.C., Luccas, P.O., Highly improved sensitivity of TS-FF-AAS for Cd(ii) determination at ng L - 1 levels using a simple flow injection minicolumn preconcentration system with multiwall carbon nanotubes (2006) J. Anal. At. Spectrom., 21, pp. 1305-1313
- Brancalion, M.L., Arruda, M.A.Z., Evaluation of medicinal plant decomposition efficiency using microwave ovens and mini-vials for Cd determination by TS-FF-AAS (2005) Microchim. Acta, 150, pp. 283-290
- Schiavo, D., Neira, J.Y., Nóbrega, J.A., Direct determination of Cd, Cu and Pb in wines and grape juices by thermospray flame furnace atomic absorption spectrometry (2008) Talanta, 76, pp. 1113-1118
- Nascentes, C.C., Arruda, M.A.Z., Nogueira, A.R.A., Nóbrega, J.A., Direct determination of Cu and Zn in fruit juices and bovine milk by thermospray flame furnace atomic absorption spectrometry (2004) Talanta, 64, pp. 912-917
- Pereira, M.G., Pereira, E.R., Berndt, H., Arruda, M.A.Z., Determination of cadmium and lead at low levels by using preconcentration at fullerene coupled to thermospray flame furnace atomic absorption spectrometry (2004) Spectrochim. Acta Part B, 59, pp. 515-521
- Gonzalez, E., Ahumada, R., Medina, V., Neira, J., Gonzalez, U., Thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS): Application for total determination of Cd, Pb and Zn in fresh waters, seawater and marine sediments (2004) Quim. Nova, 27, pp. 873-877
- Petrucelli, G.A., Poppi, R.J., Mincato, R.L., Pereira, E.R., TS-FF-AAS and multivariate calibration: A proposition for sewage sludge slurry sample analyses (2007) Talanta, 71, pp. 620-626
- Rosini, F., Nascentes, C.C., Neira, J.Y., Nóbrega, J.A., Evaluation of selenium behavior in thermospray flame furnace atomic absorption spectrometry (2007) Talanta, 73, pp. 845-849
- Lobo, F.A., Villafranca, A.C., Oliveira, A.P., Moraes, M., Evaluation and application of TS-FF-AAS system using ceramic tube as atomization cell for tin determination in canned foods (2008) At. Spectrosc., 29, pp. 186-192
- Berndt, H., Pulvermacher, E., Sample introduction assisted by compressed air in flame furnace AAS: A simple and sensitive method for the determination of traces of toxic elements (2005) Anal. Bioanal. Chem., 382, pp. 1826-1834
- Matos, G.D., Arruda, M.A.Z., Improvements in cobalt determination by thermospray flame furnace atomic absorption spectrometry using an on-line derivatization strategy (2008) Talanta, 76, pp. 475-478
- Wu, P., Zhang, Y., Lv, Y., Hou, X., Cloud point extraction-thermospray flame quartz furnace atomic absorption spectrometry for determination of ultratrace cadmium in water and urine (2006) Spectrochim. Acta Part B, 61, pp. 1310-1314
- Wu, P., Zhang, Y., Liu, R., Lv, Y., Hou, X., Comparison of tungsten coil electrothermal vaporization and thermospray sample introduction methods for flame furnace atomic absorption spectrometry (2009) Talanta, 77, pp. 1778-1782
- Bezerra, M.A., Lemos, V.A., Garcia, J.S., Da Silva, D.G., Araújo, A.S., Arruda, M.A.Z., Thermospray generation directly into a flame furnace - An alternative to improve the detection power in atomic absorption spectrometry (2010) Talanta, 82, pp. 437-443
Citas:
---------- APA ----------
Morzan, E., Piano, O., Stripeikis, J. & Tudino, M. (2012) . Evaluation of quartz tubes as atomization cells for gold determination by thermospray flame furnace atomic absorption spectrometry. Spectrochimica Acta - Part B Atomic Spectroscopy, 77, 58-62.http://dx.doi.org/10.1016/j.sab.2012.07.008
---------- CHICAGO ----------
Morzan, E., Piano, O., Stripeikis, J., Tudino, M. "Evaluation of quartz tubes as atomization cells for gold determination by thermospray flame furnace atomic absorption spectrometry" . Spectrochimica Acta - Part B Atomic Spectroscopy 77 (2012) : 58-62.http://dx.doi.org/10.1016/j.sab.2012.07.008
---------- MLA ----------
Morzan, E., Piano, O., Stripeikis, J., Tudino, M. "Evaluation of quartz tubes as atomization cells for gold determination by thermospray flame furnace atomic absorption spectrometry" . Spectrochimica Acta - Part B Atomic Spectroscopy, vol. 77, 2012, pp. 58-62.http://dx.doi.org/10.1016/j.sab.2012.07.008
---------- VANCOUVER ----------
Morzan, E., Piano, O., Stripeikis, J., Tudino, M. Evaluation of quartz tubes as atomization cells for gold determination by thermospray flame furnace atomic absorption spectrometry. Spectrochim. Acta Part B At. Spectrosc. 2012;77:58-62.http://dx.doi.org/10.1016/j.sab.2012.07.008
