| 引用本文: | 陈灿云,张干,李军,祁士华,彭先芝,刘国卿,张伟玲.广州麓湖水-气界面多环芳烃的通量分析.湖泊科学,2006,18(5):499-502. DOI:10.18307/2006.0510 |
| CHEN Canyun,ZHANG Gan,LI Jun,QI Shihua,PENG Xianzhi,LIU Guoqing,ZHANG Weiling.Deposition and exchange of Polycycllc Aromatic Hydrocarbons (PAHs) across air-water interface in an urban lake:Lake Luhu, Guangzhou. J. Lake Sci.2006,18(5):499-502. DOI:10.18307/2006.0510 |
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| 广州麓湖水-气界面多环芳烃的通量分析 |
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陈灿云1,2, 张干2, 李军2, 祁士华3, 彭先芝2, 刘国卿2, 张伟玲2
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1.佛山市南海区环境保护监测站, 佛山528200;2.中国科学院广州地球化学研究所有机地球化学国家重点实验室, 广州510640;3.中国地质大学地球科学学院地球化学研究所, 武汉430074
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| 摘要: |
| 利用干湿沉降采样器、大流量采样器和半渗透膜装置对广州麓湖大气干湿沉降、大气中气态和颗粒态多环芳烃以及水体中溶解态多环芳烃进行了连续一年的采样监测,并在此数据基础上依据多环芳烃在大气和水体间的作用规律,计算了广州麓湖水-气界面上多环芳烃的交换通量.结果显示,每年大气将向麓湖中输送约1300g的多环芳烃,主要以菲为主,占总量的60%以上.而湖水向大气挥发约220g的多环芳烃,主要以萘为主,占总挥发的95%.不同化合物在气水交换中的主要作用方式是不同的,2-3环的化合物主要以气水界面交换为主,5-6环的化合物以颗粒物沉降为主.而4环的化合物则以三种方式并存.不同季节,除了4环的化合物的各种作用方式所占地比重有所变化外,其它化合物变化不大. |
| 关键词: 水/气交换 多环芳烃 通量 城市湖泊 |
| DOI：10.18307/2006.0510 |
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| 基金项目:国家自然科学基金项目(40590391, 40073028);中国科学院创新基地前沿项目联合资助 |
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| Deposition and exchange of Polycycllc Aromatic Hydrocarbons (PAHs) across air-water interface in an urban lake:Lake Luhu, Guangzhou |
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CHEN Canyun1,2, ZHANG Gan2, LI Jun2, QI Shihua3, PENG Xianzhi2, LIU Guoqing2, ZHANG Weiling2
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1.Nanhai Environmental Monitoring Station, Foshan 528200, P. R. China;2.State Key Lab. cf Organic Geochemistry, Guangzhou Institute cf Geochemistry, CAS, Guangdtou 510640, P. R. China;3.Institute cf Geochemistry, Faculty of Geosciencest China University of Geosciences, Wuhan 430074, P. R. China
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| Abstract: |
| The wet and dry particle depositions, particle and gaseous phase PAHs in atmosphere, and dissolved phas? PAHs in water were sampled by passive sampler, high-volume air sampler and semipeameiable membrane device (SPMD) in Lake Luhu, respectively. According to the stagnant two-film model and Henry theory, the direction and magnitude of fluxes of PAHs across the air-water interface in Luhu Lake were calculated based on the analytical data. The result showed that the atmosphere deposited about 1300 g of PAHs to water and water volatilized about 220 g of PAHs to atmosphere. PAHs with different molecular weights have different predominant processes across the lake water-air interface |
| Key words: Air/water exchange polycyclic aromatic hydrocarbons (PAHs) flux urban lakes |
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