Academic Journals Database
Disseminating quality controlled scientific knowledge

Determination of Mercuric Ion in Water Samples with a LED Exciting and CCD Based Portable Spectrofluorimeter

Author(s): Arsenio Muñoz de la Peña | María Isabel Rodríguez-Cáceres | Diego Bohoyo Gil | María del Carmen Mahedero | María del Carmen Hurtado-Sánchez | Reyes Babiano

Journal: American Journal of Analytical Chemistry
ISSN 2156-8251

Volume: 02;
Issue: 05;
Start page: 605;
Date: 2011;
Original page

Keywords: Chemosensor | LED | Mercuric Ion | Water Analysis

The fluorescent characteristics of a fluorimetric chemosensor for mercuric ion, Hg2+, employing a synthesized Rhodamine 6G derivative, have been analyzed. For that, a portable spectrofluorimeter composed of a 515 nm LED as excitation source, two fiber-optics and a CCD camera as detector, has been used, intended for “in situ” analysis. A highly selective Rhodamine based probe for Hg2+, that is water soluble and gives a positive response upon analyte binding, is reported. The reagent is bearing a monothiospirolactone group in a Rhodamine 6G architecture and the thiol atom served for the direct attack of thiophilic Hg2+. The fluorescence enhancement is attributed to the spirolactone ring opening and the coordination of two sulphur atoms to Hg2+ giving a 2:1 reagent: Hg2+ stoichiometry complex.

Tango Jona
Tangokurs Rapperswil-Jona

     Affiliate Program