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Determination of Nadroparine in Fraxiparine injection solution using flow techniques of anlysis
Miklošinová, Aneta ; Hraníček, Jakub (advisor) ; Křížek, Tomáš (referee)
This thesis was focused on a determination of nadroparin using sequential injection analysis and flow injection analysis with fluorimetric and spectrophotometric detection. The principle of determination was based on the interaction of nadroparin with phenothiazine dye. Methylene blue was used as phenothiazine dye. The determination was performed on a laboratory made FIA instrument and on the commercial SIA instrument. Optimal conditions for SIA were concentration of dye 6 ∙ 10-5 mol dm-3 , injected volume 100 µl, flowrate 1,5 ml min-1 , for FIA: concentration of dye 3 ∙10-5 mol dm-3 flowrate 2 ml ∙ min-1 , injected volume= 100 µl, for fluorimetric detection was sensivity of the detector 1000 V, Emission was measured by 2 nm and excitation wavelenght 621 nm. For spectrophotometric detection, absorbance was detected at the absorption maximum wavelength. Repeatability ranged from 2.01 to 2.85%. The limit of detection for FIA was 0.05-0.09 IU ml-1 , for SIA were limits of detection in range 0,25 - 1,63 IU ml-1 , limits of quantification in range 0,83 - 5,44 and linear range was from 0,5 - 20 IU ml-1 . The limits of detection, limits of determination and the linear range could be corrected for the SIA by the injected volume of phenothiazine dye.
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