Phosphorescence of molecules of polycyclic aromatic hydrocarbons in aqueous micellar solutions of sodium dodecylsulfate at room temperature

1999 ◽  
Vol 66 (2) ◽  
pp. 212-216
Author(s):  
L. V. Levshin ◽  
S. N. Shtykov ◽  
I. Yu. Goryacheva ◽  
G. V. Mel'nikov
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Room Temperature ◽  
Sodium Dodecylsulfate ◽  
Micellar Solutions ◽  
Polycyclic Aromatic ◽  
Aqueous Micellar Solutions

Laser-Induced Solid-Surface Room-Temperature Phosphorimetry of Polycyclic Aromatic Hydrocarbons

1996 ◽  
Vol 50 (2) ◽  
pp. 252-256 ◽  
Author(s):  
A. D. Campiglia ◽  
D. M. Hueber ◽  
T. Vo-Dinh
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Laser Irradiation ◽  
Solid Surface ◽  
Aromatic Hydrocarbons ◽  
Room Temperature ◽  
Laser Excitation ◽  
Sample Volume ◽  
Reduction Treatment ◽  
Background Reduction ◽  
Polycyclic Aromatic

Laser-induced solid-surface room-temperature phosphorimetry (SSRTP) has been employed for the detection of polycyclic aromatic hydrocarbons. A nitrogen-pumped laser and a dye laser were used as excitation sources. The effects of sample volume, laser irradiation, and background reduction treatment on the precision and sensitivity of the method were studied. With the use of thallium(I) acetate as a phosphorescence enhancer, picogram limits of detection were estimated for phenanthrene, pyrene, benzo[ g,h,i]perylene, chrysene, coronene, and 1,2-benzofluorene. The study demonstrates that laser excitation can improve the sensitivity of SSRTP by up to three orders of magnitude.

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