Steady-state and Time-resolved fluorescence spectroscopy of aquatic humic substances (HS) isolated from Suwannee River and Nordic Lake produced by IHSS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F16%3APU120416" target="_blank" >RIV/00216305:26310/16:PU120416 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Steady-state and Time-resolved fluorescence spectroscopy of aquatic humic substances (HS) isolated from Suwannee River and Nordic Lake produced by IHSS

Popis výsledku v původním jazyce

Four aquatic humic substances (HS) were characterized using advanced fluorescence techniques. Steady-state fluorescence (fluorescence excitation and emission, excitation-emission spectra – EEM) as well as time-resolved fluorescence spectroscopy were applied. The fluorescence decay of aquatic HS samples (Suwannee River Fulvic Acid, Nordic Lake Fulvic Acid, Suwannee River Humic Acid and Nordic Lake Humic Acid) was investigated using the time-correlated single photon counting technique (TCSPC). The fluorescence EEM spectra of aquatic HS were characterized by two unique fluorophores centered at an excitation/emission wavelength pair (EEWP) of 250–255/450–465 nm (peak A) and 305/440–455 nm (peak C). The fluorescence EEM spectra of NLHA and SRFA are located by prominent fluorescence maximum at the excitation/emission wavelength pair of ~ 250/330–340 nm (peak T) which is typical for protein-like material. The decay times in the range of τ1 = 0.22 ns ± 0.03 ns, τ2 = 1.2 ns ± 0.2 ns, τ3 = 3.9 ns ± 0.4 ns, and

Název v anglickém jazyce

Steady-state and Time-resolved fluorescence spectroscopy of aquatic humic substances (HS) isolated from Suwannee River and Nordic Lake produced by IHSS

Popis výsledku anglicky

Four aquatic humic substances (HS) were characterized using advanced fluorescence techniques. Steady-state fluorescence (fluorescence excitation and emission, excitation-emission spectra – EEM) as well as time-resolved fluorescence spectroscopy were applied. The fluorescence decay of aquatic HS samples (Suwannee River Fulvic Acid, Nordic Lake Fulvic Acid, Suwannee River Humic Acid and Nordic Lake Humic Acid) was investigated using the time-correlated single photon counting technique (TCSPC). The fluorescence EEM spectra of aquatic HS were characterized by two unique fluorophores centered at an excitation/emission wavelength pair (EEWP) of 250–255/450–465 nm (peak A) and 305/440–455 nm (peak C). The fluorescence EEM spectra of NLHA and SRFA are located by prominent fluorescence maximum at the excitation/emission wavelength pair of ~ 250/330–340 nm (peak T) which is typical for protein-like material. The decay times in the range of τ1 = 0.22 ns ± 0.03 ns, τ2 = 1.2 ns ± 0.2 ns, τ3 = 3.9 ns ± 0.4 ns, and

Druh

O - Ostatní výsledky

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

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