山东大学学报 (工学版) ›› 2023, Vol. 53 ›› Issue (3): 138-146.doi: 10.6040/j.issn.1672-3961.0.2022.416
葛衍珍1,杨敏敏2*,吴婉琪3,曹方方4,崔然5,李晓萌1,赵欣然1,王艳2,陈建民3
GE Yanzhen1, YANG Minmin2*, WU Wanqi3, CAO Fangfang4, CUI Ran5, LI Xiaomeng1, ZHAO Xinran1, WANG Yan2, CHEN Jianmin3
摘要: 为了探究大气挥发性有机物(volatile organic compounds, VOCs)的垂直分布特征,利用GC-MS-FID连用仪,依托泰山进行泰安不同高度大气VOCs的研究,并分析臭氧生成的影响。研究结果显示,大津口(海拔330 m)总挥发性有机物(total VOCs,TVOCs)的体积分数最高,为72.6×10-9,臭氧生成潜势(ozone formation potential, OFP)也最高,源于本地机动车芳香烃的排放,与高山地形也有关;其次为农大(地面,TVOCs的体积分数为61.4×10-9)和玉皇顶(海拔1 534 m,TVOCs的体积分数为60.5×10-9);扇子崖(海拔500 m)TVOCs的体积分数最低,为41.2×10-9。不同站点大气中烷烃占比均最高,但VOCs的OFP优势物种不同。农大VOCs的OFP优势物种为烯烃,受交通和工业排放的影响较大;扇子崖和玉皇顶VOCs的OFP最低,其中扇子崖站点周围没有明显的排放源,且区域输送影响较低,玉皇顶主要受到高空大气输送的影响。揭示了大气VOCs的垂直分布差异,与排放源、区域输送和高山地形等都有关,也为山地城市大气VOCs和臭氧区域控制提供了数据支持和理论依据。
中图分类号:
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