Solvent-induced photodegradation as a source or error in the analysis of polycyclic aromatic hydrocarbons

Low, Gary; Batley, Graeme E.; Brockbank, Chris I.

doi:10.1016/s0021-9673(01)94266-9

Cited by 25 publications

(8 citation statements)

References 15 publications

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“…This is consistent with the commonly proposed standpoint that the solvent polarity influences PAHs photolysis [16,20,34]. * evaluates the ability of the solvent to stabilize a charge by its dielectric effect.…”

Section: Dipolarity/polarizability Role Of the Solvents As Continuum supporting

confidence: 89%

“…Therefore, some simplified chemical model systems, such as organic solvents, have been used to study the media effects on the photodegradation process [14,15]. Most of these studies have shown that the photolysis rates of PAHs are dependent on the nature of solvents [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…A general standpoint of the solvent effects on the photolysis of PAHs is that the degradation of PAHs is fast in polar solvents [16,20]. However, it is not easy to define polarity of solvent precisely, and it is even more difficult to assess it quantitatively [21].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electron-accepting potential of solvents determines photolysis rates of polycyclic aromatic hydrocarbons: Experimental and density functional theory study

Shao

Chen

Xie

et al. 2010

Journal of Hazardous Materials

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Section: Dipolarity/polarizability Role Of the Solvents As Continuum supporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electron-accepting potential of solvents determines photolysis rates of polycyclic aromatic hydrocarbons: Experimental and density functional theory study

Shao

Chen

Xie

et al. 2010

Journal of Hazardous Materials

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“…Therefore, the number of UV photons striking the adsorbed PAH might decrease and thereby reduce the photodegradation rate [17] , [18] , [37] . Second, it has been shown that the more polar the solvent, the faster photodegradation is [40] , [41] . In the present study, we assessed the PAHs in water, which is polar, and on the mangrove leaf surface, which is nonpolar.…”

Section: Resultsmentioning

confidence: 99%

Direct Observation of the Photodegradation of Anthracene and Pyrene Adsorbed onto Mangrove Leaves

Wang

Zhang

2014

PLoS ONE

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An established synchronous fluorimetry method was used for in situ investigation of the photodegradation of pyrene (PYR) and anthracene (ANT) adsorbed onto fresh leaves of the seedlings of two mangrove species, Aegiceras corniculatum (L.) Blanco (Ac) and Kandelia obovata (Ko) in multicomponent mixtures (mixture of the ANT and PYR). Experimental results indicated that photodegradation was the main transformation pathway for both ANT and PYR in multicomponent mixtures. The amount of the PAHs volatilizing from the leaf surfaces and entering the inner leaf tissues was negligible. Over a certain period of irradiation time, the photodegradation of both PYR and ANT adsorbed onto the leaves of Ac and Ko followed first-order kinetics, with faster rates being observed on Ac leaves. In addition, the photodegradation rate of PYR on the leaves of the mangrove species in multicomponent mixtures was much slower than that of adsorbed ANT. Compared with the PAHs adsorbed as single component, the photodegradation rate of ANT adsorbed in multicomponent mixtures was slower, while that of PYR was faster. Moreover, the photodegradation of PYR and ANT dissolved in water in multicomponent mixtures was investigated for comparison. The photodegradation rate on leaves was much slower than in water. Therefore, the physical-chemical properties of the substrate may strongly influence the photodegradation rate of adsorbed PAHs.

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“…Low et al studied the photodegradation of various PAHs, including DBAN, in different organic solvents with varying polarity. 75 They demonstrated that, under UV illumination with a 254 nm lamp, the half-life of DBAN in nonpolar hexane is 77 times longer than in a polar solvent such as methanol. This suggests that DBAN is resistant to photodegradation in non-polar or less polar environment.…”

Section: Photochemical Studies 321 Uv Illumination Of Dban In Hexanementioning

confidence: 99%

Inorganic nanotubes with permanent wall polarization as dual photo-reactors for wastewater treatment with simultaneous fuel production

Patra

Schaming

Picot

et al. 2021

Environ. Sci.: Nano

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Solvent-induced photodegradation as a source or error in the analysis of polycyclic aromatic hydrocarbons

Cited by 25 publications

References 15 publications

Electron-accepting potential of solvents determines photolysis rates of polycyclic aromatic hydrocarbons: Experimental and density functional theory study

Electron-accepting potential of solvents determines photolysis rates of polycyclic aromatic hydrocarbons: Experimental and density functional theory study

Direct Observation of the Photodegradation of Anthracene and Pyrene Adsorbed onto Mangrove Leaves

Inorganic nanotubes with permanent wall polarization as dual photo-reactors for wastewater treatment with simultaneous fuel production

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