Hydrocarbons
1 Compounds of carbon and hydrogen constitute primary hydrocarbon contaminants,such as aromatics and paraffins,which originate with the processing and use of petroleum and its products.
2 Derivatives or secondary contaminants,such as aldehydes,ketones,and organic acids,are formed when hydrogen is replaced with oxygen,halogens,or other substituent groups.
3 Like carbon monoxide,the most significant source of hydrocarbons is the use of petroleum products to fuel motor vehicles.
4 Petroleum processing,solvent use,and related uses of petroleum products in commercial and industrial operations contribute to air pollution by hydrocarbons.
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參考答案:碳氢化合物
1.碳氢化合物组成了基本碳氢污染物,像芳族化合物和烷属烃,石油及其产物的生产和使用中会形成这些物质.
2. 当氧族,卤族或其他族元素被氢取代,形成了醛,酮和有机酸等衍生物或二次污染物.
3.碳氢化合物像一氧化碳一样,主要来源于石油制品在燃油机动车辆的使用.
4.贸易和工业生产中 石油的处理,溶剂的使用,和石油制品的相关使用会产生碳氢化合物污染大气.