大气与环境光学学报2025，Vol.20Issue(5)：598-609,12.DOI:10.3969/j.issn.1673-6141.2025.05.004
基于光声光谱的汽车尾气PM0.1光吸收系数研究
PM0.1 of automobile exhaust optical absorption coefficient measurement based on photoacoustic spectroscopy
摘要
Abstract
Ultra-fine particulate matter(PM0.1)emission from automobile exhaust and its aging process in the atmosphere have a significant impact on human health and environmental climate.In this work,the optical absorption coefficients of PM0.1 in the exhaust of 18 automobile under no-load idle state and after 4 hours and 14 hours of light aging were researched with photoacoustic spectroscopy at 1064 nm.The results showed that the optical absorption coefficient of PM0.1 in vehicle exhaust decreases obviously after the implementation of National V standard in China,which is positively correlated with engine displacement,service life and weight and the optical absorption coefficient of PM0.1 increased first and then decreased during light aging.This work provides an experimental basis and data support for further understanding of the light absorption characteristics and environmental behavior of PM0.1 in automobile exhaust.关键词
光声光谱技术/汽车尾气/超细颗粒/光吸收系数Key words
photoacoustic spectroscopy/automobile exhaust/ultrafine particles/optical absorption coefficient分类
数理科学引用本文复制引用
陈加雪,唐敏,尹亚婕,牛明生..基于光声光谱的汽车尾气PM0.1光吸收系数研究[J].大气与环境光学学报,2025,20(5):598-609,12.基金项目
山东省自然科学基金项目(ZR2018MD015,2018),山东省重点研发计划项目(2017GSF17125),大学生创新实验项目(XJ20200071) （ZR2018MD015,2018）
