Determination of deuterium oxide content in water based on luminescence quenching

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00102949" target="_blank" >RIV/00216224:14310/18:00102949 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0039914018302534" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0039914018302534</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.talanta.2018.03.016" target="_blank" >10.1016/j.talanta.2018.03.016</a>

Result language
angličtina
Original language name
Determination of deuterium oxide content in water based on luminescence quenching
Original language description
Water molecules (H2O) often reduce luminescence lifetimes of various luminescence probes. The change of lifetime is usually caused by dynamic luminescence quenching induced by O-H oscillators which effectively take away energy from excited molecule. The process can be described by Stern-Volmer equation. We have studied selected luminescence systems where it is possible to detect considerable changes of lifetime in presence/absence of H2O and D2O in this work for analytical purposes. We have tested both, inorganic (Ln(3+)) and organic compounds using three different instrumentation in order to find the largest change between tau(H) and tau(D). The Ln(3+) containing systems have shown considerable increase/decrease of lifetimes in the presence/absence of D2O (Eu3+ : tau(D)/tau(H) = 34.5) whereas organic systems gave significantly lower values of tau(D)/tau(H) (coumarin 123 lifetime ratio, tau(D)/tau(H) = 1.94). The calculated LOD varied from 0.04 mol l(-1) (samarium nitrate) to 6.55 mol l(-1) (riboflavin).
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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