Development of a method for multielemental determination in water by EDXRF with radioisotopic source of 238Pu
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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Proteção Radiológica - SBPR
2019
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| _version_ | 1876446788694573056 |
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| author | Camilo Fuentes Serrano |
| author_facet | Camilo Fuentes Serrano |
| contents | Development of a method for multielemental determination in water by EDXRF with radioisotopic source of 238Pu Camilo Fuentes Serrano Juan Reinaldo Estévez Alfredo Montero Ivan Pupo Zahily Herrero Dennys Leyva Piet Van Espen Jossue Arteche Lino Varcárcel Jose Araujo dos Santos Júnior Biología EDXRF water Multielemental determination A method for determination of Cr, Fe, Co, Ni, Cu, Zn, Hg and Pb in waters by Energy Dispersive X Ray Fluorescence (EDXRF) was implemented, using a radioisotopic source of 238Pu. For previous concentration was employed a procedure including a coprecipitation step with ammonium pyrrolidinedithiocarbamate (APDC) as quelant agent, the separation of the phases by filtration, the measurement of filter by EDXRF and quantification by a thin layer absolute method. Sensitivity curves for K and L lines were obtained respectively. The sensitivity for most elements was greater by an order of magnitude in the case of measurement with a source of 238Pu instead of 109Cd, which means a considerable decrease in measurement times. The influence of the concentration in the precipitation efficiency was evaluated for each element. In all cases the recoveries are close to 100%, for this reason it can be affirmed that the method of determination of the studied elements is quantitative. Metrological parameters of the method such as trueness, precision, detection limit and uncertainty were calculated. A procedure to calculate the uncertainty of the method was elaborated; the most significant source of uncertainty for the thin layer EDXRF method is associated with the determination of instrumental sensitivities. The error associated with the determination, expressed as expanded uncertainty (in %), varied from 15.4% for low element concentrations (2.5-5 μg/L) to 5.4% for the higher concentration range (20-25 μg/L). 2019 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280838071 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.2A Vol.7 |
| format | Artículo científico |
| id | redalyc_722280838071 |
| institution | Redalyc |
| language | en |
| publishDate | 2019 |
| publisher | Sociedade Brasileira de Proteção Radiológica - SBPR |
| spellingShingle | Development of a method for multielemental determination in water by EDXRF with radioisotopic source of 238Pu Camilo Fuentes Serrano Biología EDXRF water Multielemental determination Development of a method for multielemental determination in water by EDXRF with radioisotopic source of 238Pu Camilo Fuentes Serrano Juan Reinaldo Estévez Alfredo Montero Ivan Pupo Zahily Herrero Dennys Leyva Piet Van Espen Jossue Arteche Lino Varcárcel Jose Araujo dos Santos Júnior Biología EDXRF water Multielemental determination A method for determination of Cr, Fe, Co, Ni, Cu, Zn, Hg and Pb in waters by Energy Dispersive X Ray Fluorescence (EDXRF) was implemented, using a radioisotopic source of 238Pu. For previous concentration was employed a procedure including a coprecipitation step with ammonium pyrrolidinedithiocarbamate (APDC) as quelant agent, the separation of the phases by filtration, the measurement of filter by EDXRF and quantification by a thin layer absolute method. Sensitivity curves for K and L lines were obtained respectively. The sensitivity for most elements was greater by an order of magnitude in the case of measurement with a source of 238Pu instead of 109Cd, which means a considerable decrease in measurement times. The influence of the concentration in the precipitation efficiency was evaluated for each element. In all cases the recoveries are close to 100%, for this reason it can be affirmed that the method of determination of the studied elements is quantitative. Metrological parameters of the method such as trueness, precision, detection limit and uncertainty were calculated. A procedure to calculate the uncertainty of the method was elaborated; the most significant source of uncertainty for the thin layer EDXRF method is associated with the determination of instrumental sensitivities. The error associated with the determination, expressed as expanded uncertainty (in %), varied from 15.4% for low element concentrations (2.5-5 μg/L) to 5.4% for the higher concentration range (20-25 μg/L). 2019 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280838071 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.2A Vol.7 |
| title | Development of a method for multielemental determination in water by EDXRF with radioisotopic source of 238Pu |
| topic | Biología EDXRF water Multielemental determination |
| url | https://www.redalyc.org/articulo.oa?id=722280838071 |