An optimized approach for estimating benzene in ambient air within an air quality monitoring network

• 作者: David Galán-Madruga Jesús P.Garc(i)a-Cambero
• 来源期刊: 环境科学学报（英文版）
• 年，卷（期）: 2022,（1）
• 页码范围: 164-174
• 页数: 11页
• 语种: 英文

摘要

Benzene is a carcinogenic air pollutant for which European legislation has set an annual limit and criteria for the number of fixed monitoring sites within air quality networks(AQMN).However,due to the limited number of fixed sites for benzene measurement,ex-posure data are lacking.Considering the relationship between benzene levels and other variables monitored within an AQMN,such as NO2,03,temperature,solar radiation,and ac-cumulated precipitation,this study proposes an approach for estimating benzene air con-centrations from the related variables.Using the data of the aforementioned variables from 23 fixed stations during 2016-2017,the proposed approach was able to forecast benzene con-centration for 2018 with high confidence,providing enriched data on benzene exposure and its trends.Moreover,the spatial distribution of the estimated versus the most representa-tive benzene levels was quite similar.Finally,an artificial neural network identified the most representative fixed benzene monitoring sites within the AQMN.