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黄河三角洲土壤中的多环芳及其基衍生物:分布,来源分配和风险评估

Siyuan Li¹, Qiuyue Zhang¹, Meng Gao¹

¹MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.

Marine pollution bulletin

|April 4, 2024

概括

在黄河三角洲土壤中发现多环芳 (PAH) 和化PAH分布不均. 生物质和石油燃烧是关键来源,构成生态风险,需要持续的环境监测.

科学领域:

环境化学环境化学
土壤科学土壤科学
污染物分析污染物分析

背景情况:

多环芳 (PAH) 和它们的化衍生物 (HPAH) 是持久性有机污染物.
石油工业区通常是PAH和HPAH污染的热点.
了解污染物分布对于环境风险评估至关重要.

研究的目的:

调查黄河三角洲 (YRD) 表面土壤中PAH和HPAH的分布和来源.
评估这些污染物在研究区域带来的生态风险.
确定导致土壤污染的主要来源.

主要方法:

在YRD的石油工业区进行土壤采样.
对16种PAH和22种HPAH的度分析.
使用化学特征进行空间分布分析和来源识别.

主要成果:

总PAH度在19.6~1560 ng/g之间;HPAH度在2.44~14.9 ng/g之间.
对PAH和HPAH都观察到高度的空间异质性,与工业活动有关.
生物质和石油燃烧被确定为主要来源;特定的PAH显示出高生态风险.

结论:

在YRD中,土壤受到PAH和HPAH的污染是显著的,并且在空间上是可变的.
石油燃烧和生物质燃烧是土壤污染的主要原因.
与某些PAHs相关的生态风险以及PAHs/HPAHs的联合作用需要持续的环境监测.

关键词:

这就是HPAHs.这些PAHs是PAH.石油工业区是一个石油工业区.河流的河口河口.土壤污染土壤污染

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