Liu Feng, Niu Lixia, Chen Hui, Li Ping, Tian Feng, Yang Qingshu
Institute of Estuarine and Coastal Research, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China; State-province Joint Engineering Laboratory of Estuarine Hydraulic Technology, Guangzhou 510275, China.
Institute of Estuarine and Coastal Research, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China; State-province Joint Engineering Laboratory of Estuarine Hydraulic Technology, Guangzhou 510275, China.
Mar Pollut Bull. 2017 Apr 15;117(1-2):255-263. doi: 10.1016/j.marpolbul.2017.01.061. Epub 2017 Feb 7.
The behaviours of PAHs (containing 2-6 aromatic rings) in the Pearl River estuary were examined each month in 2011. This study was designed to investigate the abundance of 16 priority PAHs and their response to the seasonal dynamics of anthropogenic activities and hydrological cycles. Monthly mean concentrations of ∑PAHs in water and suspended particulate matter (SPM) were 88.31ng/L and 252.31ng/L respectively, with higher concentrations in the wet season (April to September). Heavy precipitation in the wet season resulted in relatively increased PAH input via riverine discharges and atmospheric deposition. Seasonal variations in suspended sediment concentration (SSC), temperature and salinity have considerably affected the PAH phase association. Higher SSC in the wet season contributed to higher concentration of the PAHs in SPM, and higher temperature and lower salinity facilitated desorption from SPM. The PAH sources were largely attributed to vehicular emissions, coal combustion and coke ovens.
2011年，每月对珠江口含2 - 6个芳香环的多环芳烃（PAHs）行为进行监测。本研究旨在调查16种优先控制多环芳烃的含量及其对人为活动和水文循环季节动态的响应。水中和悬浮颗粒物（SPM）中∑PAHs的月平均浓度分别为88.31ng/L和252.31ng/L，湿季（4月至9月）浓度较高。湿季的强降水导致通过河流排放和大气沉降输入的多环芳烃相对增加。悬浮泥沙浓度（SSC）、温度和盐度的季节变化对多环芳烃的相分配有显著影响。湿季较高的SSC导致SPM中多环芳烃浓度较高，较高的温度和较低的盐度促进了多环芳烃从SPM中的解吸。多环芳烃的来源主要归因于车辆排放、煤炭燃烧和焦炉。
