Assessment of the contamination of a multibuilding facility by polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins, and polychlorinated dibenzofurans.
Thompson-HC Jr.; Kendall-DC; Korfmacher-WA; Rowland-KL; Rushing-LG; Chen-JJ; Kominsky-JR; Smith-LM; Stalling-DL
Environ Sci Technol 1986 Jun; 20(6):597-603
Polychlorinated-biphenyl (1336363) (PCB), polychlorinated-dibenzo-p- dioxin (36088229) (PCDD), and polychlorinated-dibenzofuran (36088229) (PCDF) contamination was investigated at a multibuilding facility. Several hundred surface wipe samples were taken and smaller numbers of air samples and dust samples were analyzed. The problem was traced to the incomplete incineration of approximately 200 gallons of Aroclor-1254 askarel at the contaminated site over 12 years ago. The effluent from the incinerator was airborne and spread throughout the complex through ventilation systems. The levels of PCBs were higher on the floors and elevated horizontal surfaces of buildings than on the interior walls of the buildings, suggesting that the source was airborne particulate matter and that the particulates settled out onto the floors and horizontal surfaces. PCB concentrations of the floor sampled ranged from 5.1 to 11 milligrams/square meter (mg/m2). Air samples showed PCB concentrations greater than or equal to 1.0 micrograms/cubic meter (microg/m3) for 15 of the 32 sites studied. The highest PCB level measured was 3.4microg/m3. The NIOSH recommended standard for occupational exposure is a time weighted average of 1.0microg/m3. The hypothesis that octachlorodibenzo-p-dioxin (39001020) (OCDD) can be used as a marker for all the PCDDs and PCDFs and that total PCBs can be used as a marker for the semiquantitative estimation of the PCDDs and PCDFs has been validated as the ratios of OCDD to heptachlorodibenzo-p-dioxins (34465468) and PCBs to OCDD in wipe and dust samples showed good agreement and were reasonably consistent.
NIOSH-Author; Environmental-pollution; Environmental-contamination; Emission-sources; Polychlorinated-hydrocarbons; Insecticides; Airborne-particles; Ventilation-systems
1336-36-3; 36088-22-9; 36088-22-9; 39001-02-0; 34465-46-8
Environmental Science and Technology