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单词 polychlorinated biphenyl
释义

Definition of polychlorinated biphenyl in English:

polychlorinated biphenyl

(also PCB)
noun
Chemistry
  • Any of a class of toxic aromatic compounds, often formed as waste in industrial processes, whose molecules contain two benzene rings in which hydrogen atoms have been replaced by chlorine atoms.

    Example sentencesExamples
    • Presumed modern substances, dioxins typically are byproducts of the production of industrial chemicals such as polychlorinated biphenyls and some pesticides.
    • Although trained as a veterinarian, Miyata cut his teeth as an environmental scientist researching another toxic chemical, polychlorinated biphenyl, at the Osaka Prefecture Institute of Public Health.
    • With respect to chemical potency and brain impairment, we found that hydrogen sulfide and polychlorinated biphenyls caused the most abnormalities in brain function - an average of 15.
    • This is an important convention, as it provides for the safe disposal of persistent organic pollutants, including polychlorinated biphenyl.
    • Further tests discovered traces of some of the world's most toxic industrial chemicals, including polychlorinated biphenyls and dioxin, in Arctic wildlife.
 
 

Definition of polychlorinated biphenyl in US English:

polychlorinated biphenyl

(also PCB)
nounˌpälēˈklôrəˌnātid bīˈfenəl
Chemistry
  • Any of a class of toxic aromatic compounds, often formed as waste in industrial processes, whose molecules contain two benzene rings in which hydrogen atoms have been replaced by chlorine atoms.

    Example sentencesExamples
    • Although trained as a veterinarian, Miyata cut his teeth as an environmental scientist researching another toxic chemical, polychlorinated biphenyl, at the Osaka Prefecture Institute of Public Health.
    • Presumed modern substances, dioxins typically are byproducts of the production of industrial chemicals such as polychlorinated biphenyls and some pesticides.
    • Further tests discovered traces of some of the world's most toxic industrial chemicals, including polychlorinated biphenyls and dioxin, in Arctic wildlife.
    • With respect to chemical potency and brain impairment, we found that hydrogen sulfide and polychlorinated biphenyls caused the most abnormalities in brain function - an average of 15.
    • This is an important convention, as it provides for the safe disposal of persistent organic pollutants, including polychlorinated biphenyl.
 
 
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更新时间:2024/12/23 9:04:12