|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 3 van 9 gevonden artikelen
| Titel: |
Dry Deposition of Gas-Phase Polycyclic Aromatic Hydrocarbons to Greased Surrogate Surfaces |
| Auteur: |
Shahin, Usama M. Li, Yuh-Hwa Holsen, Thomas M. |
| Verschenen in: |
Aerosol science and technology |
| Paginering: | Jaargang 31 (1999) nr. 6 pagina's 446-455 |
| Jaar: |
1999-12-01 |
| Inhoud: |
Recently, greased surrogate surfaces have been successfully used to directly measure the dry deposition of semivolatile organic chemicals (SVOCs). However, it has been difficult to interpret these measurements because the extent to which the grease used to collect the deposited particles absorbs the gas phase SVOCs is not clear. In this study, the partitioning between polycyclic aromatic hydrocarbons (PAHs) in the vapor phase and grease used on surrogate surfaces was investigated. This interaction was parameterized by defining a partition factor as the ratio between the individual PAH air phase equilibrium concentration and the PAH grease phase equilibrium concentration multiplied by the square root of the PAH diffusion coefficient in the grease. This factor was used to estimate the vapor phase PAH deposition to greased surrogate surfaces deployed in the field for periods between 1 and 5 days. For these samples, naphthalene had the largest gas phase deposition to the grease while fluorene had the lowest. The amount of deposited PAH attributable to gas phase deposition was not significant compared to particle deposition. The air grease partition factor was found to be correlated to its octanol air partition coefficient (r2 > 77%). |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 3 van 9 gevonden artikelen
| << vorige | volgende >> |