基于多点在线监测的典型工业园区挥发性有机化合物污染的空间异质性：污染特征、健康风险和重点控制物种

IF 4.2 2区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Environment Pub Date : 2024-10-02 DOI:10.1016/j.atmosenv.2024.120852

Mengjuan Han , Ge Ren , Xinna Zhao , Xiaodong Zhang , Hong Lin , Dan Liu , Lei Wang

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引用次数: 0

摘要

工业园区的排放物是环境挥发性有机化合物（VOC）污染的重要来源，具有浓度高、成分复杂、排放源分散、空间分布不均等特点。为了更好地理解和解决这一问题，通过多点监测分析挥发性有机化合物污染的空间差异及相关健康风险至关重要。在本研究中，我们在中国开封的一个典型工业园区建立了四个在线监测点。我们监测了 115 种挥发性有机化合物，发现四个监测点之间总挥发性有机化合物（TVOC）的浓度和化学成分存在显著差异。其中两个地点主要由卤代烃组成（分别为 49.80% 和 41.21%），而另外两个地点的芳烃比例较高（分别为 54.78% 和 39.03%）。乙醛是一个地点臭氧形成潜能值（OFP）的主要成因，而甲苯则与其他三个地点有关。挥发性有机化合物浓度和臭氧形成潜能值最高的地点，其二次有机气溶胶形成潜能值也最高。在健康风险评估方面，所有地点的丙烯醛都具有非致癌风险，但四个地点的致癌风险存在差异。一个地点的 1,2-二氯乙烷超过了明确的风险限值，而另一个地点的 1,2-二溴乙烷和氯仿被认为是可能存在风险的物种。考虑到环境影响和健康风险，我们使用熵权法计算了综合控制指数（CCI）。该指数确定 1,2-二氯乙烷在两个地点为Ⅰ级受控污染物，甲苯在另外两个地点为Ⅰ级受控污染物。这项研究强调了工业园区内挥发性有机化合物污染和健康风险的空间异质性，为有针对性的污染控制策略提供了宝贵的见解。

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Spatial heterogeneity of volatile organic compound pollution in a typical industrial park based on multi-point online monitoring: Pollution characteristics, health risks, and priority-controlled species

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Emissions from industrial parks are crucial sources of ambient volatile organic compound (VOC) pollution, characterized by high concentrations, complex compositions, dispersed emission sources, and uneven spatial distribution. To better understand and address this issue, it is crucial to analyze the spatial differences in VOC pollution and associated health risks through multi-point monitoring. In this study, we established four online monitoring sites in a typical industrial park in Kaifeng, China. We monitored 115 VOC species and found significant differences in the concentration and chemical composition of total VOCs (TVOCs) among the four sites. Two sites were primarily composed of halohydrocarbons (49.80% and 41.21%), while the other two sites had a higher proportion of aromatics (54.78% and 39.03%). Acetaldehyde was the main contributor to ozone formation potential (OFP) at one site, while toluene was associated with the other three sites. The site with the highest VOC concentration and OFP also showed the highest secondary organic aerosol formation potential (SOAP). In terms of health risk assessment, acrolein posed a non-carcinogenic risk at all sites, but there were disparities in the carcinogenic risk among the four sites. 1,2-Dichloroethane at one site exceeded the definite risk limit, while 1,2-dibromoethane and chloroform were considered probable risk species at another site. Considering both the environmental impact and health risk, we used entropy-weighting to calculate a comprehensive control index (CCI). This index identified 1,2-dichloroethane as the Level Ⅰ controlled pollutant species at two sites, and toluene at the other two sites. This study highlights the spatial heterogeneity in VOC pollution and health risks within the industrial park, providing valuable insights for targeted pollution control strategies.

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来源期刊

Atmospheric Environment 环境科学-环境科学

CiteScore

9.40

自引率

8.00%

发文量

458

审稿时长

53 days

期刊介绍： Atmospheric Environment has an open access mirror journal Atmospheric Environment: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Atmospheric Environment is the international journal for scientists in different disciplines related to atmospheric composition and its impacts. The journal publishes scientific articles with atmospheric relevance of emissions and depositions of gaseous and particulate compounds, chemical processes and physical effects in the atmosphere, as well as impacts of the changing atmospheric composition on human health, air quality, climate change, and ecosystems.