TY  - JOUR
AU  - Uskoković-Marković, Snežana
AU  - Todorović, M.
AU  - Mioč, Ubavka B.
AU  - Antunović-Holclajtner, I.
AU  - Andrić, V.
PY  - 2006
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/698
AB  - In this study, we have developed a sensitive, rapid and simple procedure for the energy dispersive X-ray fluorescence (EDXRF) spectrometry measurement of tungsten in tobacco plant parts. Only 0.1 g of dried plant material is needed instead of the usual I g. EDXRF spectrometry is used for quantitative measurement, after the foliar application of solutions of tungstophosphoric acid (WPA), its magnesium salt and compounds with glycine (Gly) and alanine (Ala), in exact quantities. After that, the leaves, trunks and summits were collected and prepared separately. Tungsten is determined directly in raw dried material, and the overlap of the tungsten peak with zinc's that is present is avoided by the spectral deconvolution to obtain quantitative results. The prepared dry tablets weighed 100 mg, and measurement time was 2000 s. The radioisotope excitation source used was Cd-109 and tungsten was identified and quantified at the L-alpha 1 and L-alpha 2 lines at the energies of 8397.6eV and 8335.2eV, respectively. EDXRF spectrometry was applied in a wide range of concentrations (up to 2000 mg/kg), with an estimated detection concentration limit of 15 mg/kg, calculated on dried material. Quantitative analysis of different parts of the treated plant plus the washings gave 94.47% recovery of the applied tungsten in different compound forms. After the foliar application of investigated WPA compounds, there were noticed both vertical and horizontal distributions of tungsten through out the tobacco plants, according to the EDXRF spectrometry results. This conclusion is also in agreement with the positive effects of WPA on Tobacco mosaic tobamovirus (TMV) infection of Nicotiana tabacum (Solanaceae).
PB  - Elsevier Science BV, Amsterdam
T2  - Talanta
T1  - EDXRF spectrometry determination of tungsten in tobacco plants after antiviral treatment with 12-tungstophosphoric acid and its compounds
VL  - 70
IS  - 2
SP  - 301
EP  - 306
DO  - 10.1016/j.talanta.2006.02.041
ER  - 

@article{
author = "Uskoković-Marković, Snežana and Todorović, M. and Mioč, Ubavka B. and Antunović-Holclajtner, I. and Andrić, V.",
year = "2006",
abstract = "In this study, we have developed a sensitive, rapid and simple procedure for the energy dispersive X-ray fluorescence (EDXRF) spectrometry measurement of tungsten in tobacco plant parts. Only 0.1 g of dried plant material is needed instead of the usual I g. EDXRF spectrometry is used for quantitative measurement, after the foliar application of solutions of tungstophosphoric acid (WPA), its magnesium salt and compounds with glycine (Gly) and alanine (Ala), in exact quantities. After that, the leaves, trunks and summits were collected and prepared separately. Tungsten is determined directly in raw dried material, and the overlap of the tungsten peak with zinc's that is present is avoided by the spectral deconvolution to obtain quantitative results. The prepared dry tablets weighed 100 mg, and measurement time was 2000 s. The radioisotope excitation source used was Cd-109 and tungsten was identified and quantified at the L-alpha 1 and L-alpha 2 lines at the energies of 8397.6eV and 8335.2eV, respectively. EDXRF spectrometry was applied in a wide range of concentrations (up to 2000 mg/kg), with an estimated detection concentration limit of 15 mg/kg, calculated on dried material. Quantitative analysis of different parts of the treated plant plus the washings gave 94.47% recovery of the applied tungsten in different compound forms. After the foliar application of investigated WPA compounds, there were noticed both vertical and horizontal distributions of tungsten through out the tobacco plants, according to the EDXRF spectrometry results. This conclusion is also in agreement with the positive effects of WPA on Tobacco mosaic tobamovirus (TMV) infection of Nicotiana tabacum (Solanaceae).",
publisher = "Elsevier Science BV, Amsterdam",
journal = "Talanta",
title = "EDXRF spectrometry determination of tungsten in tobacco plants after antiviral treatment with 12-tungstophosphoric acid and its compounds",
volume = "70",
number = "2",
pages = "301-306",
doi = "10.1016/j.talanta.2006.02.041"
}

Uskoković-Marković, S., Todorović, M., Mioč, U. B., Antunović-Holclajtner, I.,& Andrić, V.. (2006). EDXRF spectrometry determination of tungsten in tobacco plants after antiviral treatment with 12-tungstophosphoric acid and its compounds. in Talanta
Elsevier Science BV, Amsterdam., 70(2), 301-306.
https://doi.org/10.1016/j.talanta.2006.02.041

Uskoković-Marković S, Todorović M, Mioč UB, Antunović-Holclajtner I, Andrić V. EDXRF spectrometry determination of tungsten in tobacco plants after antiviral treatment with 12-tungstophosphoric acid and its compounds. in Talanta. 2006;70(2):301-306.
doi:10.1016/j.talanta.2006.02.041 .

Uskoković-Marković, Snežana, Todorović, M., Mioč, Ubavka B., Antunović-Holclajtner, I., Andrić, V., "EDXRF spectrometry determination of tungsten in tobacco plants after antiviral treatment with 12-tungstophosphoric acid and its compounds" in Talanta, 70, no. 2 (2006):301-306,
https://doi.org/10.1016/j.talanta.2006.02.041 . .