Combined dot sensors are new tools in sensors' technology. Different scenarios regarding the innovation, development, design, behaviour, implementation and application of dot sensors will be outlined. They were designed for food, pharmaceutical or biological analysis. Food additives such as colorants and ascorbic acid were determined directly from food and beverages, sildenafil citrate in pharmaceutical formulations and dopamine from pharmaceutical and biological samples. The working dot sensors were based on diamond or carbon paste modified with different porphyrin base or metal-porphyrin complexes, using different electrochemical techniques such as, differential pulse voltammetry (DPV) were used for the assay of the samples. The lower limits of detection obtained allowed the assay of these analytes at levels which do not need preconcentration of the samples.

Combined dot sensors for food, pharmaceutical and biological analysis

245th National Meeting (2013)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.