| Naslov: | Hemichrome Determination by Thermal Lensing with Polyethylene Glycols for Signal Enhancement in Aqueous Solutions |
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| Avtorji: | ID Galimova, Viktoriya, Lomonosov Moscow State University (Avtor)
ID Franko, Mladen, Univerza v Novi Gorici (Avtor)
ID Proskurnin, Mikhail, Lomonosov Moscow State University (Avtor)
ID Liu, Mingqiang, Universe v Novi Gorici (Avtor), et al. |
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| Datoteke: |
Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u.  |
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Delo ni kategorizirano |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: | UNG - Univerza v Novi Gorici
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| Opis: | The thermal lens technique is proposed for the determination of total hemoglobin in the form of reversible hemichrome. The conditions were optimized (concentration of sodium dodecyl sulfate, 2 mM) to attain the maximum sensitivity with the use of polyethylene glycols as signal enhancers. For polyethylene glycols with molecular weights 1500–35000 Da in a concentration range of 5–15% w/w (5–25 mM), the influence on thermal lens signal enhancement was estimated. It is shown that the use of 5% w/w polyethylene glycol 2000 provides the maximum increase in the thermal lens enhancement factor (by 40%) in comparison with unmodified aqueous solutions. The detection limit of iron(II) tris(1,10-phenanthrolinate) as a model system is 60 nM. Under these conditions, the thermal lens detection limit of hemichrome is 10 nM, which shows a 15-fold enhancement compared to spectro- photometry. Modification of the medium with polyethylene glycols decreases the limit of detection of hemichrome determination by 15% in comparison with unmodified aqueous solutions due to better reproducibility for the range of concentrations from 0.02 to 0.9 μM. |
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| Ključne besede: | Hemoglobin, hemikrom, optotermična spektroskopija, etilenglikol, spektrometrija s toplotnimi lečami |
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| Verzija publikacije: | Nerecenzirani rokopis |
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| Leto izida: | 2018 |
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| Št. strani: | 1743-1762 |
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| Številčenje: | 51, 11 |
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| PID: | 20.500.12556/RUNG-4081 |
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| COBISS.SI-ID: | 5136891 |
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| DOI: | 10.1080/00032719.2017.1391828 |
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| NUK URN: | URN:SI:UNG:REP:LX3R9ASK |
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| Datum objave v RUNG: | 16.04.2018 |
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| Število ogledov: | 4965 |
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| Število prenosov: | 0 |
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| Metapodatki: |    |
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