Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Lack of an aging effect on the soil/air partitioning of PCBs.
AU - Cousins, Ian T.
AU - Mclachlan, Michael S.
AU - Jones, Kevin C.
PY - 1998/9/15
Y1 - 1998/9/15
N2 - Two different laboratory experiments were undertaken to investigate whether the aging of polychlorinated biphenyls (PCBs) in soils affects their soil−air partitioning behavior. In the first, portions of a sandy loam soil were spiked and stored in glass jars for 3−392 days to artificially age the PCB residues. Soil−air partition coefficients (KSA) were then determined using a solid-phase fugacity meter. In the second experiment, a sewage sludge that had been highly contaminated with PCBs more than 30 years ago and stored in a lagoon was obtained and blended with soil. An additional 10 PCB congeners, which were shown not to be naturally present in the sludge-amended soil, were added. Aliquots of the spiked sludge-amended soil were stored for 1−42 days. After each storage period, the relative partitioning of the native and spiked congeners from the sludge-amended soil into the air was measured. Results from the two experiments showed that aging, by either storage in glass jars or exposure to natural processes in a lagoon for 30 years, did not affect the soil−air partitioning behavior of PCBs. There was a short period after spiking (2−12 weeks) in which the spiked PCBs were more readily partitioned into the air, but after this initial effect, there were no further changes in soil−air partitioning behavior.
AB - Two different laboratory experiments were undertaken to investigate whether the aging of polychlorinated biphenyls (PCBs) in soils affects their soil−air partitioning behavior. In the first, portions of a sandy loam soil were spiked and stored in glass jars for 3−392 days to artificially age the PCB residues. Soil−air partition coefficients (KSA) were then determined using a solid-phase fugacity meter. In the second experiment, a sewage sludge that had been highly contaminated with PCBs more than 30 years ago and stored in a lagoon was obtained and blended with soil. An additional 10 PCB congeners, which were shown not to be naturally present in the sludge-amended soil, were added. Aliquots of the spiked sludge-amended soil were stored for 1−42 days. After each storage period, the relative partitioning of the native and spiked congeners from the sludge-amended soil into the air was measured. Results from the two experiments showed that aging, by either storage in glass jars or exposure to natural processes in a lagoon for 30 years, did not affect the soil−air partitioning behavior of PCBs. There was a short period after spiking (2−12 weeks) in which the spiked PCBs were more readily partitioned into the air, but after this initial effect, there were no further changes in soil−air partitioning behavior.
U2 - 10.1021/es980183d
DO - 10.1021/es980183d
M3 - Journal article
VL - 32
SP - 2734
EP - 2740
JO - Environmental Science and Technology
JF - Environmental Science and Technology
SN - 0013-936X
IS - 18
ER -