scholarly journals Laser fluorescence spectroscopy in predicting the formation of a keloid scar: preliminary results and the role of lipopigments

2020 ◽  
Vol 11 (4) ◽  
pp. 1742
Author(s):  
Andreeva Viktoriya ◽  
Raznitsyna Irina ◽  
Gerzhik Anastasiia ◽  
Glazkov Alexey ◽  
Makmatov-Rys Mikhail ◽  
...  
Keyword(s):  
Fluorescence Spectroscopy ◽  
Laser Fluorescence ◽  
Keloid Scar ◽  
Preliminary Results ◽  
Laser Fluorescence Spectroscopy

Fluorescence spectroscopy on protactinium(IV) in aqueous solution

2004 ◽  
Vol 92 (7) ◽  
Author(s):  
Christian M. Marquardt ◽  
P. J. Panak ◽  
C. Apostolidis ◽  
A. Morgenstern ◽  
C. Walther ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Fluorescence Spectroscopy ◽  
Emission Band ◽  
Ph Value ◽  
Fluorescence Emission ◽  
Laser Fluorescence ◽  
Hypsochromic Shift ◽  
Time Resolved ◽  
Band Position ◽  
Laser Fluorescence Spectroscopy

SummaryThis work focuses on time-resolved laser fluorescence spectroscopy (TRLFS) of Pa(IV) in aqueous solution. Excitation at 308 nm causes a fluorescence emission with a peak maximum at about 460 nm. Thereby, the position of the band´s maximum depends on the concentration, the type of the acid, and the pH value. Increasing complexation of the Pa(IV) ion leads to an increasing hypsochromic shift of the emission band up to 46 nm. In contrast to the band position the half-width (61.6±1.4 nm) and the lifetime (16±2 ns) of the fluorescence emission do not change significantly with changes in the chemical environment of the Pa(IV). The results of this work show that speciation of Pa(IV) can be performed even in aqueous solution by using TRLFS.

Sign in / Sign up

Export Citation Format

Share Document