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  2. Persistent, bioaccumulative and toxic substances - Wikipedia

    en.wikipedia.org/wiki/Persistent,_bio...

    Persistent, bioaccumulative and toxic substances (PBTs) are a class of compounds that have high resistance to degradation from abiotic and biotic factors, high mobility in the environment and high toxicity. Because of these factors PBTs have been observed to have a high order of bioaccumulation and biomagnification, very long retention times in ...

  3. Persistent organic pollutant - Wikipedia

    en.wikipedia.org/wiki/Persistent_organic_pollutant

    Environment portal. Ecology portal. v. t. e. Persistent organic pollutants (POPs) are organic compounds that are resistant to degradation through chemical, biological, and photolytic processes. [1] They are toxic and adversely affect human health and the environment around the world. [1]

  4. Toxic equivalency factor - Wikipedia

    en.wikipedia.org/wiki/Toxic_Equivalency_Factor

    Toxic equivalency factor (TEF) expresses the toxicity of dioxins, furans and PCBs in terms of the most toxic form of dioxin, 2,3,7,8-TCDD. [1] The toxicity of the individual congeners may vary by orders of magnitude. With the TEFs, the toxicity of a mixture of dioxins and dioxin-like compounds can be expressed in a single number – the toxic ...

  5. Pollution of the Hudson River - Wikipedia

    en.wikipedia.org/wiki/Pollution_of_the_Hudson_River

    The PCBs came from the company's two capacitor manufacturing plants at Hudson Falls and Fort Edward, New York. [1] The U.S. Environmental Protection Agency (EPA) banned the manufacture of PCBs in 1979. [9] The bulk of the PCBs in the river were manufactured by Monsanto Co. under the brand names Aroclor 1242 and Aroclor 1016. [10]

  6. Environmental toxicology - Wikipedia

    en.wikipedia.org/wiki/Environmental_toxicology

    Environmental toxicology is a multidisciplinary field of science concerned with the study of the harmful effects of various chemical, biological and physical agents on living organisms. [1][2] Ecotoxicology is a subdiscipline of environmental toxicology concerned with studying the harmful effects of toxicants at the population and ecosystem ...

  7. Maharashtra Health and Technical Common Entrance Test

    en.wikipedia.org/wiki/Maharashtra_Health_and...

    The MHT-CET or Common Entrance Test is an annual entrance exam conducted by the Government of Maharashtra. [ 4 ][ 5 ] It is conducted by the Directorate of Technical Education. The degree courses of the following streams are mainly accounted for in this entrance exam: Engineering. Pharmacy.

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