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has been cited by the following article:

• TITLE: Direct Cadmium Monitoring in Cigarette Filters Leachate by Molecular Fluorescence

  AUTHORS: María Carolina Talio, Tristán A. Bonfiglioli, Marta O. Luconi, Liliana P. Fernández

  KEYWORDS: Cadmium Traces; SPADNS; Rhodamine B; Molecular Fluorescence; Cigarette Filters Leachate

  JOURNAL NAME: Journal of Environmental Protection, Vol.3 No.2, February 24, 2012

  ABSTRACT: This work proposes a new direct flourimetric methodology for cadmium traces quantification based on its association with azo-reagent SPADNS and rhodamine B dye. Experimental variables that influence on fluorimetric sensibility were optimized using uni-variation assays. The calibration graph using zeroth order calibration was linear from 0.192 to 1.26 104 μg.L-1, with a correlation coefficient of 0.99. Under the optimal conditions, it was obtained a limit of detection of 0.057 μg.L-1 and a limit of quantification of 0.192 μg.L-1. The method showed good sensitivity, adequate selectivity with good tolerance to foreign ions, and was applied to the determination of trace amounts of cadmium in filters leachates coming from unsmoked, automatically smoked and smokers smoked cigarettes with satisfactory results. The proposed method represents an innovative application of luminescence to metal analysis comparable in sensitivity and accuracy to atomic spectroscopies.