摘要
通过对广州市老城区空气中多环芳烃的研究表明 ,该区多环芳烃的污染相当严重 ,不同季节测定的多环芳烃总量差别不大 ,但颗粒相多环芳烃在春季占的比例 (44 8% )要高于夏季 (9 4 % ) .气相中主要以芴、菲、甲基菲、荧蒽、芘等低环数的多环芳烃为主 ,而高于四环的多环芳烃主要是分布在颗粒相中 ,苯并 (ghi)是最主要的颗粒相多环芳烃物质 .
The distribution of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere of Guangzhou was investigated. The results showed that little change was observed in the total PAH concentrations between spring and summer. The particle phase contribution ranged from 9.4% of the total PAHs in summer to 44.8% in spring. Fluorene, phenanthrene and their methylated derivatives, fluoranthene and pyrene are the dominant PAH species in the gas phase, while higher ring species PAHs dominated in the particulate phase with benzo(ghi)perylene as the maxima.
出处
《环境科学学报》
CAS
CSCD
北大核心
2004年第1期101-106,共6页
Acta Scientiae Circumstantiae
基金
中国科学院创新基地基金 (0 0 110 9)
广东省"十五"重大项目 (2 0 0 1A30 4 0 10 1)资助
关键词
多环芳烃
大气污染
相分布
气溶胶
polycyclic aromatic hydrocarbons (PAHs)
aerosol
phase partitioning
