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AMA 2019 Speakers

Dr. Rastislav Serbin (Invited Speaker)

Pavol Jozef Šafárik University in Košice, Slovak Republic

Biography:Dr. Rastislav Serbin is a scientist and teacher at Pavol Jozef Šafárik University in Košice, Faculty of Science, Department of Analytical Chemistry in Slovak Republic and is responsible for development of new and effective analytical methods for determination of number of analytes. He focuses on new compounds and materials which can be used in analytical chemistry. He specializes on spectral detection techniques and optical sensors. His main task of research is to minimalize expanses, time of analysis and used volumes of solvents and to maximize efficiency of developed methods.  He also cooperates on some projects and manages some international agreements between universities and other research workplaces.  

Title of Speech: Basic red 12 as a highly potent organic material used in analytical chemistry

Abstract: Basic red 12 (BR12) 1,3,3 – trimethyl – 2 - [3 - (1,3,3-trimethyl-1,3-dihydroindol -2 - yliden) -propyl1,3-dienyl]-3H-indolium chloride is an organic agent belonging to the organic basic dyes. It’s commonly used in textile industry. At our department we showed other potential of this dye. BR12 is highly potent analytical agent for determination of some very important analytes (f. e. diclofenac, some surfactants, Au, Pd, Pt and other).
Best results were achieved by speciation and determination of platinum. It is known that Pt usually occurs in aqueous solutions in the form of anions, mostly the chloride acid complexes [PtCl6] 2- and [PtCl4] 2-, which differ in reaction activity. This allows the use of a polymethine agent BR12 in order to make such anions extractable as ion associate (IA). Relevant IA are highly effective analytical tools for AAS speciation of microamounts of platinum.
The principles of the developed method for Pt speciation are the different conditions needed for the formation and extraction of Pt(IV) and Pt(II) ion associates with SCN- and BR12 agent. The conditions found for IA formation and extraction have enabled the proposing of a new Pt(II) and Pt(IV) speciation process. These species can be reliably determined simultaneously at concentration ratios from 1:5 to 5:1. Moreover, the IA of platinum with BR12 can be extracted with toluene up to a volume ratio of aqueous and organic phases of Vaq:Vorg = 50:1. This fact for Pt determination means decreasing the limit of detection from 7.1 µg L-1 to 0.3 µg L-1.
The method was applied for Pt determination in a model and real samples.