摘要
利用^(210)Pb和^(137)Cs定年技术结合松花江河漫滩沉积物柱样中多环芳烃(PAHs)的检测结果分析PAHs在近90年间的年代特征.结果表明,松花江河漫滩沉积物中PAHs质量比在1960年以后急剧增加,20世纪90年代初期达到峰值后呈下降趋势,与我国滇池和其他部分城市湖泊沉积记录基本一致,但与发达国家同类研究结果明显不同.与国内其他河流沉积物相比,松花江PAHs污染处于中等水平,呈现以萘、菲等低环化合物为主的污染特征.根据PAHs环数的相对丰度、w(蒽)/w(蒽+菲)、w(荧蒽)/w(荧蒽+芘),沉积物PAHs主要来源于石油类污染.PAHs质量比的阶段性变化与流域内近90年的人口、GDP均显著相关,即松花江PAHs污染与人类活动显著相关.
Using the 210Pb and 137Cs dating technique combined with test results of polycyclic aromatic hydrocarbons （PAHs） in sediment cores on floodplain of Songhua River, we analyzed time trend of PAHs mass ratio in the past 90 years. Results show that the mass ratio of PAHs in sediment increases sharply from the t960s to a peak in the early 1990s and subsequently decrease. The time trend of sedimentary PAHs in Songhua River is basically similar to that in Dianchi and some other urban lakes in China, but clearly different from that in developed countries. The results also show that the PAHs concentrations reach a relatively moderate level in the surface sediments compared with other domestic river sediments. The pollution characteristics of low ring compounds such as naphthalene, phenanthrene and so on are presented. According to the relative abundance of PAHs ring number and ratios of w（Ant）/w（Ant±Phe）, w（Flt）/w（Flt±Pyr）, the PAHs of sediment mainly comes from petroleum pollution. The stage change of mass ratio of PAHs is significantly correlated with the population and GDP in the watershed during the last 90 years, i. e. PAHs pollution of Songhua River is related to human activities.
出处
《吉林大学学报（理学版）》
CAS
CSCD
北大核心
2016年第6期1469-1476,共8页
Journal of Jilin University:Science Edition
基金
国家水体污染控制与治理科技重大专项基金(批准号:2009ZX0707-001-03)
高等学校博士学科点专项基金(批准号:20100061110041)
吉林省环保局项目(批准号:2009-19)
关键词
多环芳烃
河漫滩
沉积物柱样
松花江
polycyclic aromatic hydrocarbons （PAHs）
floodplain
sediment core
Songhua River
