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- W2376787035 abstract "A highly sensitive and selective photo-induced fluorescence(PIF)method was developed for the determination of vitamin K1(VK1).The method was based on ultraviolet(UV)irradiation(254nm,15 W)of non-fluorescent VK1 to produce an intensively fluorescent product.The fluorescent photoproduct generated showed native fluorescence with emission maxima at 465 nm.When adding imidazole,the fluorescence characteristics of photoproducts produced from UV irradiation of VK1 were changed.Consequently,a new strong emission peak appeared at 330 nm and the stokes shift was 135 nm between the two emission peaks.In addition,when increasing the concentration of VK1,the fluorescence signal increased at 465 nm,but reduced at 330 nm.The detection limit(signal-to-noise ratio=3)was 0.003μg·mL-1(S/N= 3)and the relative standard deviation was 2.4%.The method also seems to be suitable for human serum analysis providing satisfactory recoveries(97%-104%)." @default.
- W2376787035 created "2016-06-24" @default.
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- W2376787035 date "2014-01-01" @default.
- W2376787035 modified "2023-09-26" @default.
- W2376787035 title "Determination of vitamin K1 based on photo-induced fluorescence" @default.
- W2376787035 hasPublicationYear "2014" @default.
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