单词 | polychlorinated |
释义 | polychlorinatedadj. Chemistry. Having two or more chlorine atoms added to or introduced as substituents in each molecule. Chiefly in polychlorinated biphenyl n. at Compounds. ΘΚΠ the world > matter > chemistry > polymer chemistry > industrial polymers (named) > [adjective] polychlorinated1895 phenol-formaldehyde1911 polychlorinated biphenyl1959 1895 Philos. Trans. 1894 (Royal Soc.) A. 185 555 (heading) Poly-chlorinated compounds. 1935 C. Ellis Chem. Synthetic Resins II. lviii. 1178 Amino and hydroxy compounds are formed when polychlorinated paraffins are heated with solutions of ammonia or caustic alkali, respectively. 1951 H. H. Shephard Chem. & Action Insecticides xi. 271 The higher polychlorinated naphthalenes are utilized as noninflammable waxes in electric insulation. 1991 Lancet 19 Oct. 963/2 Increased risks of suicide in cohorts potentially exposed to polychlorinated dioxins were recorded. Compounds polychlorinated biphenyl n. any of a class of polychlorinated compounds derived from biphenyl, which have a wide variety of industrial applications and are persistent environmental pollutants; abbreviated PCB. ΘΚΠ the world > matter > chemistry > polymer chemistry > industrial polymers (named) > [noun] hexamethylenediamine1894 cellulose acetate1895 bakelite1909 phenol-formaldehyde1911 Paxolin1918 methylcellulose1921 Saran1940 polyester resin1946 polyester fibre1951 Mylar1952 polychlorinated biphenyl1959 the world > matter > chemistry > polymer chemistry > industrial polymers (named) > [adjective] polychlorinated1895 phenol-formaldehyde1911 polychlorinated biphenyl1959 1959 Industr. & Engin. Chem. (Internat. ed.) 51 1000/2 The experimental values..were obtained using polychlorinated biphenyl in the electrically heated and reference tubes. 1971 P. Gresswell Environment 201 Polychlorinated biphenyls were found in high concentration in birds which died in 1969 in the Irish Sea. 2002 M. Kurlansky Salt (2003) xviii. 302 Chlorine is a component of some of the deadliest industrial pollutants, including polychlorinated biphenyls. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < adj.1895 |
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