低温煤焦油中含有许多珍贵化合物，但目前多作为液体燃料在市场上销售，这是对资源的极大浪费。
The low temperature coal-tar includes many precious compound, but at the present it is often selled as the liquid fuel in the market, this creates enormous waste to the resources.
结论煤焦油加工生产过程中产生的主要职业危害因素为苯系物、多环芳烃、。酚类化合物，以及生产过程中使用的煤气中的一氧化碳等。
Conclusions in the coal tar processing, the harmful factors are the series of benzene, polycyclic aromatic hydrocarbon, phenolics and co which is used in the process of production.
粪臭素：一种白色结晶有机化合物，C9H 9n，有强烈臭味，自然存在于粪便、甜菜根和煤焦油中，作为生产香料的固定剂。
A white crystalline organic compound, C9H 9n, having a strong fecal odor, found naturally in feces, beets, and coal tar and used as a fixative in the manufacture of perfume.
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