Catalytic dechlorination of organochlorine compounds V. Polychlorinated biphenyls-Aroclor 1254

1979 ◽  
Vol 22 (1) ◽  
pp. 750-753 ◽  
Author(s):  
W. H. Dennis ◽  
Yun H. Chang ◽  
W. J. Cooper
Keyword(s):  
Polychlorinated Biphenyls ◽  
Organochlorine Compounds ◽  
Aroclor 1254 ◽  
Catalytic Dechlorination

scholarly journals Leaching Rate of Polychlorinated Biphenyls (PCBs) from Marine Paint Chips

2021 ◽  
Author(s):  
Allen D. Uhler ◽  
Jeffery H. Hardenstine ◽  
Deborah A. Edwards ◽  
Guilherme R. Lotufo
Keyword(s):  
Polychlorinated Biphenyls ◽  
Surface Waters ◽  
Leaching Rate ◽  
Short Term ◽  
Aroclor 1254 ◽  
Maintenance And Repair ◽  
Potential Source ◽  
Vessel Bottom ◽  
Dissolved Phase ◽  
Over Time

AbstractPolychlorinated biphenyls (PCBs) were added to certain marine vessel bottom paints as a plasticizer to improve the adhesion and durability of the paint. The most common PCB formulation used to amend such paints was Aroclor 1254. Fugitive Aroclor-containing paint chips generated from vessel maintenance and repair operations represent a potential source of PCB contamination to sediments. Limited published studies indicate that Aroclor-containing paint is largely inert and exhibits low PCB leaching into water; however, the rate and degree of leaching of PCBs from paint chips have not been directly studied. This laboratory-based study evaluated the rate and extent of leaching of PCBs from paint chips into freshwater. The results of this investigation demonstrate that the rate of PCB dissolution from paint chips decreased rapidly and exponentially over time. Based on this study, it is estimated that the rate of leaching of PCBs from paint chips would cease after approximately 3 years of exposure to water. When all leachable PCBs were exhausted, it is estimated that less than 1% of the mass of PCBs in the paint chips was amenable to dissolution. The results of this experiment suggest that Aroclor-containing paint chips found in sediments are likely short-term sources of dissolved-phase PCB to pore or surface waters and that the majority of the PCBs in paint chips remain in the paint matrix and unavailable for partitioning into water. Graphic Abstract

Biological activity associated with noncoplanar polychlorinated biphenyls after microbial dechlorination of aroclor 1242® and aroclor 1254®

2000 ◽  
Vol 19 (5) ◽  
pp. 1311-1316 ◽  
Author(s):  
Patricia E. Ganey ◽  
John F. Quensen ◽  
Mahmoud A. Mousa ◽  
Stephen A. Boyd ◽  
Margaret A. Wagner ◽  
...  
Keyword(s):  
Biological Activity ◽  
Polychlorinated Biphenyls ◽  
Aroclor 1254 ◽  
Aroclor 1242 ◽  
Microbial Dechlorination

Catalytic dechlorination of polychlorinated biphenyls in soil by palladium–iron bimetallic catalyst

2009 ◽  
Vol 164 (1) ◽  
pp. 126-132 ◽  
Author(s):  
Na He ◽  
Peijun Li ◽  
Yuncheng Zhou ◽  
Wanxia Ren ◽  
Shuxiu Fan ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Bimetallic Catalyst ◽  
Catalytic Dechlorination

Levels of Polychlorinated Biphenyls and Pesticides in Bluefish Before and After Cooking

1989 ◽  
Vol 72 (3) ◽  
pp. 501-503
Author(s):  
William J Trotter ◽  
Paul E Corneliussen ◽  
Ronald R Laski ◽  
Joseph J Vannelli
Keyword(s):  
Polychlorinated Biphenyls ◽  
Moisture Loss ◽  
Aroclor 1254 ◽  
Weight Losses ◽  
Before And After

Abstract Similar levels of polychlorinated biphenyls (PCBs), pesticides, and fat were found in 20 correlated uncooked and cooked (baked) bluefish fillets. Fillets averaged 2.5 ppm PCBs as Aroclor 1254 (whole basis) before cooking; after cooking, with the oil drippings and skin discarded, the average PCB level was 2.7 ppm. Although PCBs, lipophilic pesticides, and fat were lost along with oil drippings and skin that were discarded after cooking, the moisture loss in the fillets during cooking compensated for these weight losses almost completely. After the fillets were cooked and the oil drippings and skin were discarded, the PCB content of the fillets was 27% lower on the average.

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