risk assessment of polychlorinated biphenyls (pcbs)

  • risk assessment of polychlorinated biphenyls (pcbs) in indoor air

    RISK ASSESSMENT OF POLYCHLORINATED BIPHENYLS (PCBs) IN INDOOR AIR

    RISK ASSESSMENT OF POLYCHLORINATED BIPHENYLS (PCBs) IN INDOOR AIR B K Davis1, J F Beach2,3, M J Wade1, A K Klein1, and K Hoch2 1California Environmental Protection Agency Department of Toxic Substances Control, Sacramento, CA; 2Tetra Tech EM Inc., San Francisco, CA; 3Currently, U.S. Environmental Protection Agency, Region IX, San Francisco, CA.

  • risk assessment of polychlorinated biphenyls (pcbs)

    Risk Assessment of Polychlorinated Biphenyls (PCBs)

    The risk assessment from exposure to PCBs presents problems which are more complicated than are usually encountered when dealing with a group of compounds. Indeed, it is certainly much more complicated than the earlier risk assessment of dioxins (Ahlborg et al. 1988).

  • learn about polychlorinated biphenyls (pcbs) | us epa

    Learn about Polychlorinated Biphenyls (PCBs) | US EPA

    Polychlorinated Biphenyls; Manufacturing (Import) Exemption. 72 FR 21190. 4/4/2006. Notice of Availability. Polychlorinated Biphenyl (PCB) Site Revitalization Guidance Under the Toxic Substances Control Act (TSCA) 71 FR 16703. 6/30/2005. Notice of Public Meeting. Polychlorinated Biphenyls. 70 FR 37837. 9/7/2004

  • distribution, source and risk assessment of polychlorinated

    Distribution, source and risk assessment of polychlorinated

    Ren et al. (2007) estimated the PCB profiles in Chinese PCB product and transformer oil using homologue profile of Aroclor 1242 for #1 PCB and Aroclor 1254 for #2 PCB, and reported that the major homologue produced and used in China was tri-CBs, followed by tetra-CBs. As well known, PCBs with low molecular weight were mainly used in

  • exposure to polychlorinated biphenyls (pcbs) | niosh | cdc

    Exposure to Polychlorinated Biphenyls (PCBs) | NIOSH | CDC

    Exposure to Polychlorinated Biphenyls and the Risk of Disease. 2006. Study Background. Polychlorinated Biphenyls (PCBs) are synthetically produced chemicals formerly used to manufacture electrical capacitors. Increasing concerns about PCBs’ potential health and environmental effects led to a ban on PCB production and use in the U.S. in 1977.

  • risk assessment of polychlorinated biphenyls at hazardous

    Risk Assessment of Polychlorinated Biphenyls at Hazardous

    While undertaking risk assessment at a hazard waste site where multifamily housing was constructed over soil contaminated with polychlorinated biphenyls (PCBs), we became aware of a number of complex issues in PCB risk assessment including contaminant identification, fate and transport, ambient levels, exposure pathways and regulatory criteria.

  • polychlorinated biphenyls (pcbs) casrn 1336-36-3

    Polychlorinated Biphenyls (PCBs) CASRN 1336-36-3

    Mar 2015: IRIS Toxicological Review of Polychlorinated Biphenyls (PCBs) (Scoping and Problem Formulation Materials) (Report) Sep 1996: PCBs: Cancer Dose-Response Assessment and Application to Environmental Mixtures (1996) (Report) Sep 1984: Health Effects Assessment for Polychlorinated Biphenyls (PCBs) (Report)

  • understanding population and individual risk assessment: the

    Understanding Population and Individual Risk Assessment: The

    It will use the case of polychlorinated biphenyls (PCB) as an example of how to place scientific data into the context of human exposure and cancer risk. PCBs are widespread environmental contaminants and most people have detectable levels of PCBs in their bodies. The primary source for exposure in the general population is through the diet.

  • dioxin-like and non-dioxin-like toxic effects

    Dioxin-Like and Non-Dioxin-Like Toxic Effects

    A comparative assessment of effective doses for dioxin-like and non-dioxin-like effects by PCBs has been made to evaluate the relative significance of non-ortho-and ortho-substituted PCBs in risk assessment. Using mink as an example, relative merits and implications of using TEF and total PCB approaches for assessing the potential for toxic

  • stepping backward to improve assessment of pcb congener

    Stepping backward to improve assessment of PCB congener

    Abstract. Polychlorinated biphenyls (PCBs) are ubiquitous global contaminants that have been intensively investigated for three decades. They are broad-acting toxicants occurring in complex mixtures and accurate risk assessment has proven to be elusive.

  • status and trends of polychlorinated biphenyls (pcb) in sediment

    Status and Trends of Polychlorinated Biphenyls (PCB) in Sediment

    Polychlorinated biphenyls (PCBs) were banned in many countries in the mid-1980s. Since then, while local problems remain, mean PCB concentrations in sediment have decreased in three of five OSPAR contaminants assessment areas.

  • status and trends of polychlorinated biphenyls (pcb) in fish

    Status and Trends of Polychlorinated Biphenyls (PCB) in Fish

    The majority of polychlorinated biphenyl (PCB) concentrations are above the Background Assessment Concentration (BAC) but below the Environmental Assessment Criteria (EAC) in all assessment areas (Figures cand2). However, there are differences between congeners, with concentrations of one of the most toxic PCBs (CB118) at or above the EAC in