English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/145802
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

A comparison of devices using thermal desorption for mercury speciation in solids

AutorRumayor Villamil, Marta ; López Antón, María Antonia ; Díaz Somoano, Mercedes ; Maroto Valer, Mercedes; Richard, J-H.; Biester, H.; Martínez Tarazona, María Rosa
Palabras claveMercury
Speciation
Coal
Thermal desorption
Fecha de publicación21-dic-2015
EditorElsevier
CitaciónTalanta 150: 272-277 (2016)
ResumenThe goal of this work is to emphasize the reliability of the thermal desorption technique in identifying mercury species. The analysis of mercury species in solids is essential for assessing the risk of disposal or re-use of mercury-contaminated materials. This study evaluates the accuracy and reliability of thermal desorption as a technique for identifying mercury species by means of different thermo-desorption devices. For this purpose, mercury species present in samples related with coal utilization processes were identified. Three devices were compared for analyzing samples free of carbon or with a low carbon content (fly ashes, gypsums and soils), and a new equipment was developed to analyze samples with a high carbon content (coal). In spite of the fact that the first three devices employ different experimental conditions (i.e., heating rate, gas flow and carrier gas), the mercury species identified in the samples were comparable in all cases. The need for new equipment for mercury speciation in materials containing carbon was a consequence of interferences produced from the pyrolysis products of the organic matter. The new device consists of two furnaces and two gas inlets to allow thermal oxidation of organic pyrolysis products and the identification of mercury species in carbonaceous samples. This new approach offers the application of thermal desorption to mercury speciation in all types of materials contaminated with mercury.
Versión del editorhttp://dx.doi.org/10.1016/j.talanta.2015.12.058
URIhttp://hdl.handle.net/10261/145802
DOI10.1016/j.talanta.2015.12.058
ISSN0039-9140
E-ISSN1873-3573
Aparece en las colecciones: (INCAR) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Comparison_devices_Rumayor_Talanta_2016.pdf356,97 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.