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|Title||Assessing soil-air partitioning of PAHs and PCBs with a new fugacity passive sampler.|
|Publication Type||Journal Article|
|Year of Publication||2017|
|Authors||Donald CE, Anderson KA|
|Journal||Sci Total Environ|
|Date Published||2017 Oct 15|
Soil-air fluxes of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) were determined using a novel application of passive samplers to measure air and soil air, which is air in close proximity and in equilibrium with soil. Existing methods to measure flux of semi-volatile compounds between soil and air require collecting samples from the top soil layer. Yet, the top soil layer is hard to define and oversampling may misrepresent the exchangeable fraction. Alternatively, modified active samplers can measure soil air in situ, but require electricity while deployed. We present a new method to measure time-weighted averages of soil air concentrations in situ using passive sampling and requiring no electricity: a box is placed over low-density polyethylene passive samplers deployed 1cm above the soil. Passive air samplers were also co-deployed 1.5m above the soil to measure ambient air concentrations in three U.S.
|Alternate Journal||Sci. Total Environ.|
|PubMed Central ID||PMC5549629|
|Grant List||P30 ES000210 / ES / NIEHS NIH HHS / United States |
P42 ES016465 / ES / NIEHS NIH HHS / United States
T32 ES007060 / ES / NIEHS NIH HHS / United States