珠江口表层沉积物石油类含量、分布及变化趋势  

Distribution and variation trend of oil contents in surface sediment in the Pearl River Estuary

作　　者：吴玲玲[1] 周俊杰[1] 李海涛[1] 陈洁[1] 胡平[1] 黄楚光[1] 方宏达[1] 

机构地区：[1]国家海洋局南海环境监测中心,广州510300

出　　处：《生态科学》2012年第5期543-547,共5页Ecological Science

摘　　要：采用紫外分光光度法测定了2006、2009、2010和2011年夏季珠江口表层沉积物中的石油类含量,并与历史数据进行了比较。结果表明:5年中夏季珠江口表层沉积物的石油类平均含量分别为127.2μg/g、318.0μg/g、134.1μg/g、和118.5μg/g;珠江口内站位的石油类含量明显高于口外站位;相同站位的石油类含量年际间波动较大;本世纪的石油类含量明显高于二十世纪八九十年代。以《海洋沉积物质量》第一类标准来评价,4年珠江口表层沉积物石油类含量的站位超标率分别为0、25%、10%和5%。影响珠江口海域沉积物中石油类含量的主要因素有陆源排污输入、溢油和水动力条件等。The oil contents in surface sediment in the Pearl River Estuary（PRE） during the summer of 2006,2009,2010 and 2011 were determined by fluorescence spectrophotometry.The average oil contents in the four years were 127.2 μg/g,318.0 μg/g,134.1 μg/g and 118.5 μg/g,respectively.The oil contents in surface sediment of PRE in the first decade of the 21st century were much higher than those in 80-90’s of the 20th century.According to the 1st class of Marine Sediment Quality,the over-standard rates of oil contents in surface sediment were 0,25%,10% and 5%,respectively.The main factors influencing the oil contents in surface sediment of the Pearl River Estuary were land-based runoff,oil spill pollution and hydrodynamic conditions.

关 键 词：石油类 沉积物 珠江口 

分 类 号：X55[环境科学与工程—环境工程]