State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China.
State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China.
Mar Pollut Bull. 2016 Mar 15;104(1-2):347-54. doi: 10.1016/j.marpolbul.2016.01.036. Epub 2016 Feb 1.
In this study, positive matrix factorization models (PMFx) were used to analyze the sources of sedimentary PAHs in Yangtze River Estuary (YRE) using 120 data samples from 30 sites collected over four seasons. Three sources were defined for the PAHs: coal and gasoline combustion was the dominant source, accounting for approximately 50%; coke plant emissions and wood or grass combustion each contributed approximately 25%. The coal tar origin was the major source in summer; wood or grass combustion dominated in autumn; coal combustion was the primary source of PAHs in spring and winter. More than 90% of the coke plant emissions were from summer, while pollutants from wood or grass combustion were discharged primarily in autumn. These three sources distributed in different primary regions, the spatial patterns of coal combustion presented an increasing trend in the seaward direction.
在这项研究中，使用正矩阵因子模型（PMFx）分析了长江口（YRE）沉积物中多环芳烃（PAHs）的来源，共采集了 30 个地点的 120 个数据样本，涵盖四季。研究结果显示，PAHs 主要有三个来源：煤炭和汽油燃烧是主要来源，约占 50%；炼焦厂排放和木材或草燃烧各贡献约 25%。煤焦油是夏季的主要来源；秋季以木材或草燃烧为主；冬季和春季以煤炭燃烧为 PAHs 的主要来源。超过 90%的炼焦厂排放物来自夏季，而来自木材或草燃烧的污染物主要在秋季排放。这三个来源分布在不同的主要区域，煤炭燃烧的空间模式在向海方向呈增加趋势。
