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Biodisponibilidad oral de metales en materia particulada

Biodiponibilidade oral de metáis en materia particulada
Authors: Dans Sánchez, Lucía;

Biodisponibilidad oral de metales en materia particulada

Abstract

[Resumo:] Bio-diponibilidade oral de metáis en materia particulada. Empleouse un modelo in-vitro que combina métodos simulados de dixestión gastro- intestinal e diálise para a avaliación da bio-disponibilidade oral de elementos esenciais e tóxicos en mostras de partículado atmosféricos (PM10 e PM2,5) en mostras de varios entornos da Coruña (entorno urbano, suburbano e industrial), Despoís de realizar un tratamento de dixestión ácida asistida por enerxía de microondas, o contido total de metais nas mostras do material particulado e nos dializados foron analizadas por espectrometría de masas con plasma acoplado inductivamente (ICP-MS). Atopáronse elevados porcentaxes (superiores ao 60%) de bio-disponibilidade para o Ca (en todos os entornos e fraccións de PM10 e PM2,5). O Fe e Mg teñen unha menor bio-disponibilidade (porcentaxes entre o 10 e o 60%), mentres que o resto dos metáis, Al, As, Bi, Cd, Cr, Cu, Ni, Pb, SB, Se, Sr, V e Zn non se consideran bio-dispoñibles (porcentaxes inferiores ao 3,0%).

[Resumen:] Bio-disponibilidad oral de metales en materia particulada. Se ha utilizado un modelo in-vitro que combina métodos de digestión gastro- intestinal simulada y diálisis para la evaluación de la bio-disponibilidad oral de elementos esenciales y tóxicos, en muestras de partículado (PM10 y PM2.5) de varios entornos de A Coruña (entorno urbano, suburbano e industrial). Después de realizar un tratamiento de digestión ácido asistida por energía de microondas, el contenido total de metales en muestras de material particulado y dializados se analizaron por espectrometría de masas con plasma acoplado inductivamente (ICP-MS). Se encontraron porcentajes elevados (superiores al 60%) de bio-disponibilidad para el Ca (en todos los entornos y en las fracciones de PM10 y PM2.5). El Fe y Mg presentan una menor bio-disponibilidad (porcentajes en el intervalo de 10 a 60%), mientras que Al, As, Bi, Cd, Cr, Cu, Ni, Pb, Sb, Se, Sr, V y Zn no se consideran bio-disponibles (porcentajes inferiores al 3,0%).

[Abstract:] Oral Bio-availability of metals in particulate matter Oral bio-availability of essential and toxic elements has been assessed in particulate matter samples (PM10 and PM2.5) from several sites of A Coruña (urban, sub-urban and industrial sites) by using an in-vitro model that combines simulated gastric and intestinal digestion / dialysis methods. Total metal content in particulate matter samples and dialyzable were analyzed by inductively coupled plasma – mass spectrometry (ICP–MS) after a microwave-assisted acid digestion treatment. High dialyzability percentages for Ca (in all sites and for PM10 and PM2.5) were found (diazability percentages higher than 60%). Fe and Mg are less bio-available (dialyzability percentages in the range of 10 to 60 %), while Al, As, Bi, Cd, Cr, Cu, Ni, Pb, Sb, Se, Sr, V and Zn are not bio-availables (diazability percentages lower than 3.0 %).

Traballo fin de grao (UDC.CIE). Química. Curso 2016/2017

Country
Spain
Related Organizations
Keywords

Metales-Análisis, Metales-Biodisponibilidad

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green