石油在炼制过程中所产生的一些组分和多环芳烃,已证明对实验动物有致癌性,其常见部位为肝、肺和肾脏。Holland等并证明天然石油能导致小白鼠皮肤癌,但其致癌力比从煤和油页岩获得的制备液低。尽管炼油厂是在密闭的条件下进行生产的,但工人在取样、维修等正常操作时对这些化学物的接触在所难免。接触者和炼油厂中工作人员是否有较高的致 Some of the components and polycyclic aromatic hydrocarbons produced by petroleum during the refining process have been shown to be carcinogenic to experimental animals, with common sites of liver, lung and kidney. Holland et al. Demonstrated that natural oil can cause skin cancer in mice, but its carcinogenicity is lower than that obtained from coal and oil shale. Although refineries are produced under confined conditions, workers’ exposure to these chemicals is inevitable during normal operations such as sampling and maintenance. Contact workers and refineries whether there is a higher staff