Determination of deuterium oxide content in water based on luminescence quenching

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of deuterium oxide content in water based on luminescence quenching

Popis výsledku v původním jazyce

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).

Název v anglickém jazyce

Determination of deuterium oxide content in water based on luminescence quenching

Popis výsledku anglicky

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).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Talanta

ISSN

0039-9140

e-ISSN

—

Svazek periodika

184

Číslo periodika v rámci svazku

JUL

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

364-368

Kód UT WoS článku

000432234900046

EID výsledku v databázi Scopus

2-s2.0-85043985730