单词 | heptachlor |
释义 | > as lemmasheptachlor heptachlor n. Brit. /ˈhɛptəklɔː/ , U.S. /ˈhɛptəˌklɔr/ Chemistry a chlorinated hydrocarbon, C10H5Cl7, used as an insecticide.ΘΚΠ the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > halogenated hydrocarbons > specific tetrachlorethane1871 pentachloroethane1872 trichloroethylene1889 Freon1932 tetrafluoroethylene1933 fluorocarbon1937 perfluorocarbon1947 heptachlor1949 tetrachlorodibenzodioxin1959 TCDD1971 CFC1976 1949 Jrnl. Econ. Entomol. 42 328/1 Heptachlor, a close relative of chlordan, gave results superior to chlordan. 1961 New Scientist 6 July 9/2 British manufacturers of agricultural chemicals have agreed with the Government to restrict the use of three pesticides..aldrin, dieldrin and heptachlor. 1962 R. L. Carson Silent Spring (1963) x. 140 Heptachlor, after a short period in the tissues of animals or plants or in the soil, assumes a considerably more toxic form known as heptachlor epoxide... The Food and Drug Administration took action which had the effect of banning any residues of heptachlor or its epoxide in food. 1968 M. Pyke Food & Society viii. 119 [They] found not only DDT and its breakdown products, but BHC, heptachlor and dieldrin as well in the tissues of penguins. < as lemmas |
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