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Indexed by:期刊论文
Date of Publication:2010-04-15
Journal:TALANTA
Included Journals:SCIE、EI、PubMed
Volume:81
Issue:1-2
Page Number:643-649
ISSN No.:0039-9140
Key Words:Chemosensor; Hg2+; Rhodamine B; Fluorescent probe; SBA-15
Abstract:A new Rhodamine-based chemosensor RBSN designed for the selective detection of Hg2+ in aqueous media is synthesized and structural characterized. It features brightness blue emission in the presence of Hg2+ with the fluorescent detection limit for Hg2+ in aqueous media being ppb levels and exhibits excellent Hg2+-specific luminescence enhancement over various competitive cations, including alkali and alkaliearth, the first-row transition metals and heavy metals. By immobilizing RBSN to the mesoporous SBA-15, a highly selective and sensitive chemosensor toward mercury cations in aqueous solution was achieved. RBSN/SBA-15 could quantitatively determinate mercury cations at ppb level in the practical environmental media, suggesting the possibility for real-time quantitative detection of Hg2+ and the convenience for potential application in toxicological and environmental science. (C) 2010 Elsevier B.V. All rights reserved.
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