研究论文
刘大锰,王玮,李运勇.首钢焦化厂环境中多环芳烃分布赋存特征研究[J].环境科学学报,2004,24(4):746-749
首钢焦化厂环境中多环芳烃分布赋存特征研究
- Distribution and occurrence of polycyclic aromatic hydrocarbons from the Shougang coking plant
- 基金项目：北京市自然科学基金(8032012);地质行业青年科学基金(Qh979817);教育部留学回国人员基金
- 作者
- 单位
- 刘大锰
- 中国地质大学能源系,北京 100083
- 王玮
- 中国环境科学研究院,北京 100012
- 李运勇
- 中国地质大学能源系,北京 100083
- 摘要：对首钢焦化厂炼焦过程中生成多环芳烃的分布特征进行了初步研究.焦化厂环境中共检测出40多种多环芳烃,其中属于美国国家环保局(EPA)优先控制污染物9种,且大多具有致癌和致突变性.多环芳烃的稳定碳同位素可以初步确定环境颗粒物中PAHs的来源,以及是否混有未燃烧、燃烧不完全或干馏中间产物的颗粒物.研究表明,煤中多环芳烃通过焦化作业以烟尘、煤粒、焦末以及外排废水形式迁移而污染大气、土壤和水环境.
- Abstract：The distribution and occurrence of polycyclic aromatic hydrocarbons (PAHs) produced during coking in the Shougang coking plant has been preliminarily studied. More than 40 kinds of PAHs from the particulates and waste water have been detected in the coking plant, nine of them are precedence controlled pollutants set by US EPA. Many PAHs are carcinogenic and mutated. The content of benzo[a]pyrene in TSP from the air on the top of coking furnace is 0.71μg·m-3, which is similar to that of flue soot derived from coal combustion. The concentrations of benzo[a]pyrene and benzo[k]fluoranthene from the waste water in the coking plant are 1338 and 642.5 times as much as the standard set by International Public Health & Environmental Organization. The δD13C value of PAHs from the raw coal, coke powder, dust fall and TSP in the coking plant is-24‰,-28.3‰,-26.8‰ and-27.5‰ separately, which indicating the δD13C value of PAHs may be used to identify the sources of environmental particulates, incomplete combustion or middle products of coking. The study results indicate that PAHs in soot, coal particles, coke particles and waste water emitted from coking can result in the atmospheric, soil and water pollution.
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