Hydrocarbon pollution

       Hydrocarbons referred to as hydrocarbons. Distribution of a wide variety of hydrocarbon (or its derivatives) in the natural environment, the existence of gas, liquid, solid tri-state. Material cycle in the atmosphere, hydrosphere, lithosphere, biosphere, has a complicated relationship. Hydrocarbon pollution in the environment mainly from coal and oil, including saturated hydrocarbons, unsaturated hydrocarbons, aromatic hydrocarbons and small amounts of halogenated by and heterocyclic hydrocarbons.
       Usually low concentrations in the atmosphere hydrocarbon itself is not a serious air pollutant, but as a primary pollutant hydrocarbons into the atmosphere by chemical reactions with nitrogen oxides in sunlight and produce hydrocarbonsnature completely different secondary pollutants - photochemical oxidants. These oxidants cause many harmful effects, and even the formation of large-scale public nuisance events.
       The general situation of the formation of secondary pollutants - photochemical reaction mechanism of photochemical oxidants, through extensive research at home and abroad, people have a certain understanding. However, in reality the atmospheric environment, weather conditions, in order to suppress the generation of photochemical oxidants, specifically by what means or measures adopted and to what extent, to the possibility of taking very complex causality, it would need a lot of research.
       Hydrocarbons as environmental pollution, due to its species are diverse, it is not enough research. For example, little information of the hydrocarbons into the hazard and toxicity studies on the human body surface is gradually in-depth. Past information about the toxicity of hydrocarbons mostly belong to the occasional incidents of occupational diseases or production, it was believed that low hydrocarbon toxicity hinge, no chronic effects, but in recent years with increasing frequency of use, has found that the impact of chronic toxicity busy. Plus cases, n-hexane can cause polyneuritis, and some hydrocarbons are carcinogenic, seriously affect human health such as vinyl chloride induced liver angiosarcoma, benzene causes leukemia.
      Global oil pollution, especially oil and oil products on marine water pollution caused by marine ecosystems have been seriously harm into a huge loss to the fisheries, aquaculture Tiao; Freon in the atmosphere pollution caused by ozone depletion, the Earththe main reason for the increase on skin cancer and cataracts, causing a potential threat to humans; drinking water chlorination caused halogenated hydrocarbon pollution is a concern hydrocarbon pollution problems. The above problem is a very active research topic in the chemical field of environmental pollution, environmental workers must be full attention.