College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
Trinity Consultants, Inc. (China office), Hangzhou 310012, China.
J Environ Sci (China). 2023 Aug;130:114-125. doi: 10.1016/j.jes.2022.06.037. Epub 2022 Jul 9.
Volatile organic compounds (VOCs) are the dominant pollutants in industrial parks. However, they are not generally considered as part of the air quality index (AQI) system, which leads to a biased assessment of pollution in industrial parks. In this study, a supplementary assessment system of AQI-V was established by analyzing VOCs characteristics with vehicle-mounted PTR-TOFMS instrument, correlation analysis and the standards analysis. Three hourly and daily scenarios were considered, and the hierarchical parameter setting was further optimized by field application. The hourly and daily assessments revealed the evaluation factors for the discriminability of different air quality levels, practiced value for regional air quality improvement, and the reservation of general dominant pollutants. Finally, the universality testing in ZPIP successfully recognized most of the peaks, with 54.76%, 38.39% and 6.85% for O, VOCs and NO as the dominant pollutant, and reflected the daily ambient air quality condition, together with the dominant pollutant. The AQI-V system with VOCs sub-index is essential for air quality evaluation in industrial parks, which can further provide scientific support to control the pollution of VOCs and the secondary pollutant, therefore significantly improve the air quality in local industrial parks.
挥发性有机化合物（VOCs）是工业园区的主要污染物。然而，它们通常不作为空气质量指数（AQI）系统的一部分，这导致对工业园区污染的评估存在偏差。在这项研究中，通过使用车载 PTR-TOFMS 仪器、相关分析和标准分析，分析 VOCs 特征，建立了 AQI-V 补充评估系统。考虑了三小时和每日两种情况，并通过现场应用进一步优化了分层参数设置。小时和每日评估揭示了不同空气质量水平的可区分性评估因素、区域空气质量改善的实际价值以及一般主要污染物的保留。最后，在 ZPIP 的通用性测试中，成功识别出了大多数峰，其中 O、VOCs 和 NO 分别占 54.76%、38.39%和 6.85%，为主要污染物，并反映了每日环境空气质量状况和主要污染物。带有 VOCs 子指数的 AQI-V 系统对于工业园区的空气质量评估至关重要，它可以为控制 VOCs 和二次污染物的污染提供科学支持，从而显著改善当地工业园区的空气质量。
