Showing papers on "Brilliant green published in 1997"
TL;DR: In this article, an analytical evaluation of coated graphite saccharin ion-selective electrodes, based on the ion pair formed between saccharinate anion and basic dye cations incorporated in a polyvinylchloride (PVC) matrix, is described.
Abstract: The construction and analytical evaluation of coated-graphite saccharin ion-selective electrodes, based on the ion pair formed between saccharinate anion and basic dye cations incorporated in a poly(vinylchloride)(PVC) matrix, are described. Several basic dyes such as brilliant green, crystal violet, malachite green, methylene blue, Nile blue, rhodamine B, toluidine blue O, Victoria blue B and violet gentian were used in the preparation of the coated electrodes as anion-exchanger. Of those, only electrodes constructed with toluidine blue O, methylene blue, violet gentian and rhodamine B presented good responses. The influences of membrane composition, pH and foreign food additives were investigated. The best electrode found was 5:30:65%m/m (toluidine blue O cation)(saccharinate anion)/dibutylphthalate/PVC, respectively. This electrode shows a Nernstian response over the saccharin concentration range from 8.1×10−5 to 1.4×10−2 mol L−1, a detection limit of 6.3 10−5 mol L−1, good selectivity, precis...
19 citations
TL;DR: In this article, a sensitive spectrophotometric method for the determination of mercury, based on the flotation of a mercury iodide-brilliant green complex with cyclohexane at pH 5 and dissolution of the complex in acetone, is described.
Abstract: This paper describes a sensitive spectrophotometric method for the determination of mercury, based on the flotation of a mercury iodide-brilliant green complex with cyclohexane at pH 5 and dissolution of the complex in acetone. The absorbance of the complex is measured at 625 nm. Beer's law is obeyed from 4–500 μg/l of mercury. The method is highly sensitive (ɛ = 5.96 × 105 1 mol−1 cm−1) and selective, as it is free from interferences by almost all cations and anions in the presence of EDTA. Furthermore, a two-level orthogonal array design as a chemometric method has been used for optimization of the various parameters involved. The method has been successfully applied to paper industry effluents.
9 citations
Journal Article•
4 citations
1 citations
TL;DR: In this paper, two kinds of dyes, rose bengale and brilliant green, were used as the dopant pigments for dye-sensitized indium oxide (In2O3) films.
1 citations
Patent•
12 Feb 1997
TL;DR: A compsn. for cleaning a denture and/or surrounding tissue contains (a) the usual agents for cleaning dentures, and (b) an agent for making perceptible bacterial plaque on the denture or surrounding tissue.
Abstract: A compsn. for cleaning a denture and/or surrounding tissue contains (a) the usual agents for cleaning dentures, and (b) an agent for making perceptible bacterial plaque on the denture and/or surrounding tissue. Also claimed is a process for disclosing the presence of bacterial plaque on a denture and/or surrounding tissues which involves contacting the denture and/or surrounding tissues with the compsn. during cleaning, then the denture and/or surrounding tissues is rinsed, and the disclosing agent remains on the bacterial plaque on the denture and/or the tissues. The compsn. makes bacterial plaque visible by colouration, and esp. contains a dye which reacts with the bacterial plaque. The disclosure agents comprise erythrocin/eosine, fluorescent dyes, vital dyes, food dyes, Gram dyes such as gentian violet, iodine or phenosaffranine and fuchsine, Bismark brown, brilliant green, malachite green, or merbromin.