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单词 trihalomethane
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trihalomethane
trihalomethane n.
Brit. /ˌtrʌɪhalə(ʊ)ˈmiːθeɪn/
,
U.S. /ˌtraɪˌhæloʊˈmɛˌθeɪn/
[halo- comb. form2] any of the compounds formed by the substitution of halogen atoms for three of the hydrogen atoms of methane.
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the world > matter > chemistry > elements and compounds > hydrogen > [noun] > compounds > sulphuretted > formed by substitution of halogen atoms
trihalomethane1968
1968 Chem. Abstr. 68 744/1 The abs. intensity, A, of the ir [sc. infrared] absorption band corresponding to the vibration ν-(CH) of the trihalomethanes has been related to the electronegativity of the halogen groups and to the charge σ of the C atom.
1975 Jrnl. Amer. Water Works Assoc. 67 644/3 The four trihalomethanes were not found or were present in low concentrations in the raw waters tested.
1989 What Food? Sept. 7/2 Trihalomethanes (THMs)..are formed when untreated water containing organic matter is disinfected with chlorine.
extracted from tri-comb. form
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