沥青作为一种工业原料 ,具有防水、防腐、绝缘和粘固性等许多优良特性 ,但在高温焙烧和熔化过程中产生大量沥青烟雾 ,含有对人体有害的口丫 啶类、酚类、萘蒽类、苯并芘类等物质[1] 。为探讨沥青对作业工人免疫功能的影响 ,于 1993年 11月～ 1994年 6月对某市政工程处接触沥青 As a kind of industrial raw material, bitumen has many excellent features such as waterproof, anti-corrosion, insulation and cementing, but it produces a lot of bitumen smoke in roasting and melting process at high temperature, containing acridine, phenols, naphthalene anthracene Class, benzopyrene and other substances [1]. In order to explore the impact of asphalt on the immune function of workers, from November 1993 to June 1994, a municipal engineering agency contacted asphalt