九龙江龙岩段水体中多环芳烃的分布及来源分析  

Analyses on the Distribution and Sources of Polycyclic Aromatic Hydrocarbons in Water in the Longyan Reaches of Jiulong River

作　　者：何立坚[1] 章汝平[1] 何立芳[2] 

机构地区：[1]厦门华夏职业学院,厦门361024 [2]龙岩学院,龙岩364012

出　　处：《上海环境科学》2014年第4期139-142,147,共5页Shanghai Environmental Sciences

基　　金：福建省科技厅科技计划重点项目,编号:2010Y0040;福建省教育厅科学研究资助项目,编号:JB08234

摘　　要：在九龙江龙岩段省控的上、中、下游断面布设了4个采样点，于2010年11月（枯水期）．2011年7月（丰水期）、2011年9月（平水期）对河水中多环芳烃（PAHs）的浓度，来源进行了分析，并评估了其环境影响的风险。结果显示，龙岩市省控断面河水中，枯水期多环芳烃的含量为58．3～1328．5ng／L，平均为387．72ng／L；丰水期多环芳烃的含量为16．7～1203．3ng／L，平均含量为475．05ng／L；平水期多环芳烃的含量为5．9～188．4ng／L，平均77．46ng／L；苯并（a）芘未检出。燃烧源是九龙江龙岩段水环境中PAHs的来源。九龙江河水中的多环芳烃均不存在生态风险。The distribution of polycyclic aromatic hydrocarbons （PAHs） was studied by determining their levels in water samples at provincial control sections of the Longyan reaches of Jiulong River, very important source water for Longyan, Fujian Province. Four sites were set at the upper-, middle- and lower-reaches to collect water samples during November 2010 （as drought period）, July 2011 （as flood season） and September 2011 （as average flow phase）. The results showed that contents of PAHs in the water samples were in the range 58.3-1,328.5 ng/L with an average of 387.72 ng/L in drought period, in the range 16.7-1,203.3 ng/L with an average of 475.05 ng/L in flood season, and in the range 5.9-188.4 ng/L with an average of 77.46 ng/L in average flow phase, whilst no benzo[a]pyrene detected. According to the observed molecular indices, PAHs in aquatic environment of the Longyan reaches of Jiulong River were found to be originated from high-temperature pyrolytic processes. It has indicated that there would unlikely be an ecological risk associated with PAHs existing in the water body of Jiulong River.

关 键 词：多环芳烃(PAHs) 分布 来源 九龙江 

分 类 号：X132[环境科学与工程—环境科学]