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O3与异戊酸叶醇酯和己酸叶醇酯反应速率常数的测定
引用本文:张启磊,张永灏,俞辉,林晓晓,盖艳波,张为俊.O3与异戊酸叶醇酯和己酸叶醇酯反应速率常数的测定[J].环境科学学报,2018,38(7):2796-2802.
作者姓名:张启磊  张永灏  俞辉  林晓晓  盖艳波  张为俊
作者单位:中国科学院安徽光学精密机械研究所;中国科学技术大学;中国科学技术大学环境科学与光电技术学院
基金项目:国家自然科学基金(No.41575125,91544228,41605102)
摘    要:利用搭建的流动反应系统研究了两种生物源排放的挥发性有机物异戊酸叶醇酯和己酸叶醇酯与O3的反应动力学.实验采用绝对速率法,以保证异戊酸叶醇酯和己酸叶醇酯浓度远远高于臭氧浓度,在准一级实验条件下获得反应的速率常数信息.首先,利用该装置测得了臭氧与异戊二烯和α-蒎烯的反应速率常数,发现其与文献报道值在误差范围内非常吻合,验证了实验装置和实验方法的可靠性.进而实验测定了298 K和1.01×105Pa条件下异戊酸叶醇酯和己酸叶醇酯与O3的气相反应速率常数,分别为(1.78±0.24)×10-16和(1.54±0.18)×10-16cm3·molecule-1·s-1.利用测得的速率常数和大气中臭氧浓度,估算得到两种叶醇酯与臭氧反应的大气寿命约在2 h甚至更短,说明与臭氧的反应是它们在大气中的一种非常重要的消除途径,尤其是在污染严重地区.

关 键 词:生物源排放  反应动力学  绝对速率法  臭氧  流动管
收稿时间:2018/2/7 0:00:00
修稿时间:2018/3/1 0:00:00

Rate constants for reactions of O3 with cis-3-hexenyl isovalerate and cis-3-hexenyl hexanoate
ZHANG Qilei,ZHANG Yonghao,YU Hui,LIN Xiaoxiao,GAI Yanbo and ZHANG Weijun.Rate constants for reactions of O3 with cis-3-hexenyl isovalerate and cis-3-hexenyl hexanoate[J].Acta Scientiae Circumstantiae,2018,38(7):2796-2802.
Authors:ZHANG Qilei  ZHANG Yonghao  YU Hui  LIN Xiaoxiao  GAI Yanbo and ZHANG Weijun
Institution:1. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031;2. University of Science and Technology of China, Hefei 230026,1. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031;2. School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230031,1. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031;2. University of Science and Technology of China, Hefei 230026,Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031,Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031 and 1. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031;2. School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230031
Abstract:
Keywords:biogenic emission  kinetics  absolute rate constant  ozone  flow reactor
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