Pregled bibliografske jedinice broj: 1193493
Inner filter effect correction for fluorescence measurements in microplates using variable vertical axis focus
Inner filter effect correction for fluorescence measurements in microplates using variable vertical axis focus // Analytical chemistry, 94 (2022), 7107-7114 doi:10.1021/acs.analchem.2c01031 (međunarodna recenzija, članak, znanstveni)
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Naslov
Inner filter effect correction for fluorescence
measurements in
microplates using variable vertical axis focus
Autori
Weitner, Tin ; Friganović, Tomislav ; Šakić, Davor
Izvornik
Analytical chemistry (0003-2700) 94
(2022);
7107-7114
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
fluorescence ; absorption ; optimization
Sažetak
The inner filter effect (IFE) hinders fluorescence measurements, limiting linear dependence of fluorescence signals to low sample concentrations. Modern microplate readers allow movement of the optical element in the vertical axis, changing the relative position of the focus and thus the sample geometry. The proposed Z- position IFE correction method requires only two fluorescence measurements at different known vertical axis positions (z- positions) of the optical element for the same sample. Samples of quinine sulfate, both pure and in mixtures with potassium dichromate, showed a linear dependence of corrected fluorescence on fluorophore concentration (R2 > 0.999), up to Aex ≈ 2 and Aem ≈ 0.5. The correction extended linear fluorescence response over ≈98% of the concentration range with ≈1% deviation of the calibration slope, effectively eliminating the need for sample dilution or separate absorbance measurements to account for IFE. The companion numerical IFE correction method further eliminates the need for any geometric parameters with similar results. Both methods are available online at https://ninfe.science.
Izvorni jezik
Engleski
Znanstvena područja
Kemija, Farmacija
POVEZANOST RADA
Projekti:
UIP-2017-05-9537 - Glikozilacija serumskog transferina kao faktor u mehanizmu prijenosa željeza (GlyMech) (Weitner, Tin, HRZZ - 2017-05) ( CroRIS)
EK-EFRR-KK.01.2.2.03.0006 - Centar kompetencija u molekularnoj dijagnostici (CEKOM) (Knjaz, Damir; Lauc, Gordan; Vugrek, Oliver; Polašek, Ozren, EK - KK.01.2.2.03) ( CroRIS)
EK-KF-KK.01.1.1.01.0010 - Znanstveni centar izvrsnosti za personaliziranu brigu o zdravlju (ZCIPersonHealth) (Polašek, Ozren; Secenji, Aleksandar, EK ) ( CroRIS)
EK-EFRR-KK.01.1.1.02.0021 - Jačanje znanstveno-istraživačkih i inovacijskih kapaciteta Farmaceutsko-biokemijskog fakulteta Sveučilišta u Zagrebu (FarmInova) (Lovrić, Jasmina, EK - Ulaganje u organizacijsku reformu i infrastrukturu u sektoru istraživanja, razvoja i inovacija) ( CroRIS)
Ustanove:
Farmaceutsko-biokemijski fakultet, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
- MEDLINE
- Nature Index
