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本文观察了石油沥青生产车间投产后的三个阶段中有害物质浓度情况，苯并（ａ）芘，沥青烟与参考标准［苯并（ａ）芘１４０ｎｇ／ｍ３］和国外标准（沥青烟５ｍｇ／ｍ３）比较，从超标严重逐步改善到目前已大大低于标准，说明该车间经过采取各种治理措施，效果相当满意。氧化氮、二氧化硫、硫化氢测定浓度均很低，我们认为目前该车间的作业环境是良好的。
In this paper, we observed the concentration of harmful substances in the three stages after the production of petroleum asphalt workshop was put into production. The results showed that the concentration of benzo (a) pyrene, pitch smoke and reference standard [benzo (a) pyrene 140ng / m3] m3) compared to the gradual improvement from serious over-standard to the present has been much lower than the standard, indicating that the workshop after taking a variety of control measures, the effect is quite satisfactory. Nitrogen oxide, sulfur dioxide, hydrogen sulfide concentrations are very low, we believe that the current workshop operating environment is good.