Macroporous silica for concentration of nitroenergetic targets.
Talanta
; 81(4-5): 1454-60, 2010 Jun 15.
Article
em En
| MEDLINE
| ID: mdl-20441922
ABSTRACT
Hierarchical organosilicate sorbents were synthesized which possess structure on two length scales macropores of approximately 1microm lined by mesopores (35-45A). The incorporation of macropores provides enhanced flow-through characteristics over purely mesoporous materials, thereby reducing back pressure when used in column formats. Materials of this type with varied surface groups were applied to the adsorption of 2,4,6-trinitrotoluene (TNT) and 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX) in both batch and column formats. The results presented here demonstrate the potential of these materials for application as solid phase extraction materials for the pre-concentration of nitroenergetic targets from aqueous solutions. The structural and binding characteristics of the materials have been evaluated and preliminary data on the impact of complex matrices is provided.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Trinitrotolueno
/
Técnicas de Química Analítica
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Monitoramento Ambiental
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Dióxido de Silício
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article