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Substance: benzo[a]pyrene				Other Names: 1,2-benzpyrene

Formula: C20H12						CAS-No.: 50-32-8

Study: photodecomposition, extinction coefficients, quantum yields

                
Authors: J.S. Miller, D. Olejnik

Title: Photolysis of polycyclic aromatic hydrocarbons in water

Journal/Source: Water Research, 35 (1), 233-243, (2001); http://dx.doi.org/10.1016/S0043-1354(00)00230-X


Data: table, diagram

Energy/Wavelength range: 200 - 400 nm

Resolution: 

Temperature: 281 - 315 K

Temperature dependence: 

Pressure/Concentration: 

Phase: in solution (50/50 vol. water/methanol)

pH: 6.8


Comments: The decomposition of benzo[a]pyrene (BAP), chrysene (CHR) and fluorene (FLU) in an aqueous solution by means of 
photolysis has been studied.
The main bands appear in the range 235 - 305 nm with the maximum at 296 nm, epsilon = 67000 M-1 cm-1 and at longer wavelengths
in the range 320 - 410 nm with the maximum at 383 nm, epsilon = 31000 M-1 cm-1.
Quantum yields of the photolytic decomposition of BAP, CHR and FLU were determined and equal 0.014, 0.0031 and 0.0038, respectively.

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