Relationship of properties of polycyclic aromatic hydrocarbons to sequestration in soil.
A study was conducted to determine whether the sequestration of 21 polycyclic aromatic hydrocarbons (PAHs) in soil was correlated with their properties. From 22 to 58% of the PAHs was not extracted with n-butanol after their addition to soil. After 28 days of aging, the percentage of the PAHs remaining in the soil increased to 47-77%; however, nearly all of each compound was recovered by Soxhlet extraction. Correlations were based on the amounts of aged compound extracted with butanol. Properties of compounds used in the correlations included Kow, molecular length and molecular-connectivity indices (MCIs). No one property, including log Kow, resulted in an R2 value greater than 0.26. A chain MCI (2 chi vCH) together with log Kow or a first-order MCI (1 chi) resulted in R2 values of 0.49 and 0.54, respectively. The data suggest that the properties tested are not important to predicting the sequestration of PAHs in soil.
Kottler
B D
BD
Institute of Comparative and Environmental Toxicology and Department of Crop and Soil Sciences, Cornell University, Ithaca, NY 14853, USA.
Alexander
M
M
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004784:Environmental Monitoring; D005544:Forecasting; D007700:Kinetics; D008962:Models, Theoretical; D008970:Molecular Weight; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis*; D012995:Solubility; D013997:Time Factors
D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants