Optimizationvia experimental design of an SPE-HPLC-UV-fluorescence method for the determination of valsartan and its metabolite in human plasma samples

2006 ◽  
Vol 29 (15) ◽  
pp. 2265-2283 ◽  
Author(s):  
Gorka Iriarte ◽  
Nerea Ferreirós ◽  
Izaskun Ibarrondo ◽  
Rosa Maria Alonso ◽  
Miren Itxaso Maguregi ◽  
...  
Keyword(s):  
Experimental Design ◽  
Human Plasma ◽  
Fluorescence Method ◽  
Plasma Samples ◽  
Uv Fluorescence ◽  
Human Plasma Samples

scholarly journals Spectrofluorimetric Determination of Warfarin Sodium by Using N1-Methylnicotinamide Chloride as a Fluorigenic Agent

2005 ◽  
Vol 88 (2) ◽  
pp. 455-461 ◽  
Author(s):  
Mohamed A El Dawy ◽  
Mokhtar M Mabrouk ◽  
Riad A El Barbary
Keyword(s):  
Aqueous Solutions ◽  
Human Plasma ◽  
Plasma Samples ◽  
Spiked Human Plasma ◽  
Human Plasma Samples ◽  
Warfarin Sodium ◽  
Spectrofluorimetric Method ◽  
Spectrofluorimetric Determination ◽  
Methylene Groups

Abstract A spectrofluorimetric method is described for the determination of drugs containing active methylene groups adjacent to carbonyl groups. The method was applied successfully to the determination of warfarin sodium in laboratory-prepared mixtures, in commercial tablets, and in spiked human plasma samples. Finally, the method was applied to the determination of the steady-state concentration of warfarin sodium in the blood of a hospitalized patient. The method involves the reaction of warfarin sodium with 0.2 ml (0.4 × 10−3M) N1-methylnicotinamide chloride reagent in the presence of 3 mL 1.0N NaOH and cooling in ice for 8 min, followed by adjustment of the pH to 2.0, using formic acid and heating for 4 min, whereby a highly fluorescent reaction product is produced. The optimal wavelengths of excitation and emission were determined by using a synchronous wavelength search and found to be 284 and 354 nm, respectively. The standard curves were linear over a concentration range of 50–1500 ng/mL in both aqueous solutions and spiked human plasma samples. The mean recoveries (± standard deviation) were 101.157 (±1.33) and 95.73 (±1.88%) for aqueous solutions and spiked human plasma samples, respectively. The method showed good specificity and precision. The proposed method is simple and economical because of its minimal instrumentation and chemicals requirements. Nevertheless, it is highly sensitive, specific, and reproducible. Accordingly, it is suitable for quality-control applications, drug monitoring, and bioavailability and bioequivalency studies.

Determination of Rivaroxaban in Human Plasma Samples

2012 ◽  
Vol 38 (02) ◽  
pp. 178-184 ◽  
Author(s):  
Job Harenberg ◽  
Sandra Erdle ◽  
Svetlana Marx ◽  
Roland Krämer
Keyword(s):  
Human Plasma ◽  
Plasma Samples ◽  
Human Plasma Samples

Application of novel copper organic material for facile microextraction of sodium valproate from human plasma samples: Experimental design optimization and isotherm study

2017 ◽  
Vol 32 (1) ◽  
pp. e3960 ◽  
Author(s):  
Sonia Bahrani ◽  
Mehrorang Ghaedi ◽  
Tahere Taghipour ◽  
Mohammad Javad Khoshnood Mansoorkhani ◽  
Ahmad Reza Bagheri ◽  
...  
Keyword(s):  
Experimental Design ◽  
Design Optimization ◽  
Human Plasma ◽  
Sodium Valproate ◽  
Organic Material ◽  
Plasma Samples ◽  
Isotherm Study ◽  
Human Plasma Samples
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