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Spectrophotometric determination of phosphate in ternary systems with dyes
Novotný, Radek ; Komendová, Renata (referee) ; Sommer, Lumír (advisor)
The theoretical part of this master’s thesis is focused on the characteristics and forms of phosphorus, occurrence in natural waters and the problems associated with higher phosphorus concentrations, especially in the development of cyanobacteria and algae. There are also described the possibilities of determining the degree of pollution of natural waters by nutrients and the effects of eutrophication. There are also described methods for the determination of phosphates, especially spectrophotometric determination in ternary systems with dyes. Like other methods are mentioned AAS, ion chromatography, electrophoresis and izotachophoresis, electrochemical methods or enzymatic methods. In the experimental part of this work deals with the selection and optimalization of suitable ternary system with organic dyes for spectrophotometric determination of orthophosphates. The system with phosphovanadomolybdic acid is studied too. For analytical procedure with malachite green oxalate, which was found to be most useful, were studied interfering ions, commonly occurring in natural waters . The chosen procedure was finally tested on real water samples.
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Spectrophotometric determination of phosphate in ternary systems with dyes
Novotný, Radek ; Komendová, Renata (referee) ; Sommer, Lumír (advisor)
The theoretical part of this master’s thesis is focused on the characteristics and forms of phosphorus, occurrence in natural waters and the problems associated with higher phosphorus concentrations, especially in the development of cyanobacteria and algae. There are also described the possibilities of determining the degree of pollution of natural waters by nutrients and the effects of eutrophication. There are also described methods for the determination of phosphates, especially spectrophotometric determination in ternary systems with dyes. Like other methods are mentioned AAS, ion chromatography, electrophoresis and izotachophoresis, electrochemical methods or enzymatic methods. In the experimental part of this work deals with the selection and optimalization of suitable ternary system with organic dyes for spectrophotometric determination of orthophosphates. The system with phosphovanadomolybdic acid is studied too. For analytical procedure with malachite green oxalate, which was found to be most useful, were studied interfering ions, commonly occurring in natural waters . The chosen procedure was finally tested on real water samples.
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