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Verification of practical application of parallel SIA determination of inorganic anions in real samples of surface water
Grebeníček, Lukáš ; Sklenářová, Hana (advisor) ; Chocholouš, Petr (referee)
Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of: Analytical chemistry Candidate: Bc. Lukáš Grebeníček Supervisor: PharmDr. Hana Sklenářová, Ph.D Title of Diploma Thesis: Verification of practical application of parallel SIA determination of inorganic anions in real samples of surface water This diploma thesis is divided into two parts. In the first one, the experimental determination deals with verification of practical application of chosen anions (SiO3 2- , Cl- , NO2 - , NO3 - ) by sequential injection (SIA) assay followed by valid ISO norms for flow injection (FIA) assays. The second part compares determination of nitrites and nitrates by the SIA assay and comparative assay from MERCK company. Determination of dissolved silicates was accomplished in accordance with the Czech technical norm ČSN EN ISO 16264. This technical standard for FIA assay is based on reaction of dissolved silicates with reagent solution. Reagent is composed of acidic solution of molybdenite, which reacts with silicates and phosphates generating molybdic-silicate acid and molybdic-phosphate acid. Molybdic-phosphate acid is decomposed by oxalic acid solution and molybdic-silicate acid is reduced by stannic chloride to molybdic blue - the final product of reaction - assayed...
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Verification of practical application of parallel SIA determination of inorganic anions in real samples of surface water
Grebeníček, Lukáš ; Sklenářová, Hana (advisor) ; Chocholouš, Petr (referee)
Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of: Analytical chemistry Candidate: Bc. Lukáš Grebeníček Supervisor: PharmDr. Hana Sklenářová, Ph.D Title of Diploma Thesis: Verification of practical application of parallel SIA determination of inorganic anions in real samples of surface water This diploma thesis is divided into two parts. In the first one, the experimental determination deals with verification of practical application of chosen anions (SiO3 2- , Cl- , NO2 - , NO3 - ) by sequential injection (SIA) assay followed by valid ISO norms for flow injection (FIA) assays. The second part compares determination of nitrites and nitrates by the SIA assay and comparative assay from MERCK company. Determination of dissolved silicates was accomplished in accordance with the Czech technical norm ČSN EN ISO 16264. This technical standard for FIA assay is based on reaction of dissolved silicates with reagent solution. Reagent is composed of acidic solution of molybdenite, which reacts with silicates and phosphates generating molybdic-silicate acid and molybdic-phosphate acid. Molybdic-phosphate acid is decomposed by oxalic acid solution and molybdic-silicate acid is reduced by stannic chloride to molybdic blue - the final product of reaction - assayed...
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