亵渎
发表于 2025-3-23 10:49:00
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neutral-posture
发表于 2025-3-23 16:36:43
Introduction,o rivers. Although most scientists and managers were aware of the symptoms of poisoning by mercury, cadmium, and organo-chlorines, chemical disease was an area that the majority of environmentalists did not study. Consequently, there has been a surprising number of cases involving the exposure of hu
费解
发表于 2025-3-23 20:32:53
Physico-Chemical Concepts on the Fate of Organic Compounds,ological processes. These processes include sorption-desorption, volatilization, and chemical and biological transformation. Solubility, vapor pressure, and the partition coefficient of a compound determine its concentration and residence time in water and hence the subsequent processes in that phas
Lumbar-Spine
发表于 2025-3-23 23:47:09
Aliphatic Hydrocarbons,e, and triple bonds. Saturated compounds are known as alkanes and fit the empirical formula C.H.. Alkanes having four or more carbon atoms can exist in both straight-chain and branched-chain isomers. Compounds containing one double bond and having the formula C.H. are known as alkenes. The first two
Paraplegia
发表于 2025-3-24 04:03:22
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延期
发表于 2025-3-24 06:32:39
,Aromatic Hydrocarbons—Polycyclics,rbon atoms is shared, then the two sharing aromatic rings are considered fused. The resulting structure is a molecule where all carbon and hydrogen atoms lie in one plane. Fusion imparts chemical properties in between those of benzene, a highly aromatic compound, and those of olefinic hydrocarbons.
Painstaking
发表于 2025-3-24 13:04:52
Chlorinated Pesticides,hlorine atoms. Most members of the group are resistant to environmental degradation and relatively inert toward acids, bases, oxidation, reduction, and heat. The parent compounds often have a number of related analogs and isomers, which show significant variation in toxicity and persistence. In some
逢迎白雪
发表于 2025-3-24 15:03:43
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deviate
发表于 2025-3-24 21:28:53
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省略
发表于 2025-3-25 01:54:26
Polychlorinated Biphenyls,ce 1929 and most information on their manufacture under trade names and general characteristics are available from trade publications. The Monsanto Chemical Company, the sole manufacturer in the USA, has provided most information on their preparation and properties (Monsanto, 1972, 1974).