2006~2020年广东省人为源多环芳烃排放演变特征

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Abstract In response to issues identified in the polycyclic aromatic hydrocarbons (PAHs) emission inventory for Guangdong Province—including time-lag, unclear source classification, and ambiguous emission trends—a refined PAHs emission factor library for anthropogenic sources was established through comprehensive literature research. A high-resolution, bottom-up PAHs emission inventory of 16PAH compounds for Guangdong Province covering 2006~2020 was developed using the emission factor method, providing insights into principal emission species, key sources, and the spatiotemporal evolution of emissions. The findings were as follows: From 2006 to 2020, anthropogenic PAHs emissions in Guangdong Province showed an overall decline of 45%, with the contribution of carcinogenic PAHs reducing from 60% to 29%. Naphthalene (Nap), benzo[g,h,i]perylene (Bghip), and phenanthrene (Phe) emerged as the primary PAH species, contributing on average 23%, 10%, and 9% to total PAHs emissions, respectively. As national standards for diesel vehicles and motorcycles tightened, yellow-label vehicles were eliminated, and policies like the prohibition on straw burning were enacted, the primary sources of PAHs emissions shifted from motorcycles, diesel vehicles, and biomass burning to industrial coal combustion, coking, and household combustion. Spatial analysis indicated that line-source emissions (primarily from motorcycles and diesel vehicles) decreased significantly, while point-source emissions from industrial sources increased across several regions. Considering population health risks and the need for targeted PAHs emission controls in densely populated areas, the study recommends enhanced regulation of PAHs from industrial coal combustion and coking industries. This study provides critical scientific support for Guangdong Province's PAHs emission control strategies, with a focus on public health outcomes.

Key words： Guangdong Province PAHs emission inventories emission trends spatial evolution

Received: 27 May 2024

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X511

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	Articles by authors
	TANG Feng
	SHA Qing-e
	LIU Ying-ying
	WENG Shu-juan
	ZHOU Ning
	CHEN Hao-qi
	LIU Lu-yun
	SI-TU Shu-ping
	ZHONG Zhuang-min
	XU Guan-ying
	CHEN Duo-hong
	ZHENG Jun-yu

Cite this article:

TANG Feng,SHA Qing-e,LIU Ying-ying等. Evolutionary characteristics of anthropogenic polycyclic aromatic hydrocarbon emissions in Guangdong Province from 2006 to 2020[J]. CHINA ENVIRONMENTAL SCIENCECE, 2025, 45(1): 19-29.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2025/V45/I1/19

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