SOLUBILITY BEHAVIOR OF CRYSTALLINE POLYCYCLIC AROMATIC HYDROCARBONS (PAHs): PREDICTION OF FLUORENE SOLUBILITIES IN ORGANIC SOLVENTS WITH THE ABRAHAM SOLVATION PARAMETER MODEL

Stovall, Dawn M.; Hoover, Kaci R.; Acree, William E.; Abraham, Michael H.

doi:10.1080/10406630500227247

Cited by 16 publications

(15 citation statements)

References 42 publications

(45 reference statements)

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“…Ranges for watersoluble aerosols are marked "water-soluble minimum and water-soluble maximum" and "water-insoluble". The UV absorption of water-soluble OC lies between the ranges provided by Sun et al (2007), while the visible absorption of that OC is lower than the minimum values tabulated in that work. Our samples were collected at the source, while the other tabulation examined atmospheric aerosol.…”

Section: Nature Of Light Absorbing Ocmentioning

confidence: 67%

“…Although water-soluble organic carbon from wood combustion absorbs some visible light, a large fraction of absorption is caused by organic carbon that is not water-soluble but is extractable by methanol or acetone. Figure 10 compares our results for the sequentially-extracted filters with the data tabulated by Sun et al (2007). Ranges for watersoluble aerosols are marked "water-soluble minimum and water-soluble maximum" and "water-insoluble".…”

Section: Nature Of Light Absorbing Ocmentioning

confidence: 81%

“…Sun et al (2007) discussed two kinds of organic carbon: a water-soluble organic mixture with some UV-visible absorption (Havers et al, 1998;Hoffer et al, 2006), and a water-insoluble organic carbon with higher absorption. Kirchstetter et al (2004) and Schnaiter et al (2006) provided such data for biomass burning and propane, respectively.…”

Section: Nature Of Light Absorbing Ocmentioning

confidence: 99%

“…Andreae and Gelencsér (2006) reviewed the evidence for and nature of this "brown carbon." Sun et al (2007) examined 200 organic compounds and inferred that the light absorbing organic carbon was probably oxygenated or multifunctional, or had very high molecular weight. This work also compared reported values of absorption by organic carbon, and found that organic carbon from combustion sources might be five times more absorbing than water-soluble OC (Havers et al, 1998;Varga et al, 2001;Hoffer et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Light absorption by organic carbon from wood combustion

2010

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Abstract. Carbonaceous aerosols affect the radiative balance of the Earth by absorbing and scattering light. While black carbon (BC) is highly absorbing, some organic carbon (OC) also has significant absorption, especially at near-ultraviolet and blue wavelengths. To the extent that OC absorbs visible light, it may be a non-negligible contributor to positive direct aerosol radiative forcing. Quantification of that absorption is necessary so that radiative-transfer models can evaluate the net radiative effect of OC.In this work, we examine absorption by primary OC emitted from solid fuel pyrolysis. We provide absorption spectra of this material, which can be related to the imaginary refractive index. This material has polar character but is not fully water-soluble: more than 92% was extractable by methanol or acetone, compared with 73% for water and 52% for hexane. Water-soluble OC contributes to light absorption at both ultraviolet and visible wavelengths. However, a larger portion of the absorption comes from OC that is extractable only by methanol. Absorption spectra of water-soluble OC are similar to literature reports. We compare spectra for material generated with different wood type, wood size and pyrolysis temperature. Higher wood temperature is the main factor creating OC with higher absorption; changing wood temperature from a devolatilizing state of 210 • C to a near-flaming state of 360 • C causes about a factor of four increase in massnormalized absorption at visible wavelengths. A clear-sky radiative transfer model suggests that, despite the absorption, both high-temperature and low-temperature OC result in negative top-of-atmosphere radiative forcing over a surface with an albedo of 0.19 and positive radiative forcing over bright surfaces. Unless absorption by real ambient aerosol is higher than that measured here, it probably affects global average clear-sky forcing very little, but could be important in energy balances over bright surfaces.

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Section: Nature Of Light Absorbing Ocmentioning

confidence: 67%

Section: Nature Of Light Absorbing Ocmentioning

confidence: 81%

Section: Nature Of Light Absorbing Ocmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Light absorption by organic carbon from wood combustion

2010

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“…Monárrez et al 48 investigated the solubility of fluorene in 13 primary, four secondary, and two tertiary alcohols. In a followup study, Stovall et al 49 measured the solubility of fluorene in several alkane, dialkyl ether and alkanenitrile solvents. Experimental results from both studies were used to test the applications and limitations of the Abraham solvation parameter model in regards to solubility predictions.…”

Section: Auxiliary Informationmentioning

confidence: 99%

IUPAC-NIST Solubility Data Series. 98. Solubility of Polycyclic Aromatic Hydrocarbons in Pure and Organic Solvent Mixtures—Revised and Updated. Part 3. Neat Organic Solvents

Acree

2013

Journal of Physical and Chemical Reference Data

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This work updates Vols. 54, 58, and 59 in the IUPAC Solubility Data Series and presents solubility data for polycyclic aromatic hydrocarbon solutes dissolved in neat organic solvents. Published solubility data for acenaphthene, anthracene, biphenyl, carbazole, dibenzofuran, dibenzothiophene, fluoranthene, fluorene, naphthalene, phenanthrene, phenothiazine, pyrene, thianthrene, and xanthene that appeared in the primary literature from 1995 to the end of 2011 are compiled and critically evaluated. Experimental solubility data for more than 550 different solute-organic solvent systems are included. Solubility data published prior to 1995 were contained in three earlier volumes (Vols. 54, 58, and 59) and are not repeated in this volume.

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