Quantifying the ambient formaldehyde sources utilizing tracers
Quantifying the ambient formaldehyde sources utilizing tracers
复制标题
DOI：
10.1016/j.cclet.2014.07.001
复制
发表时间：
2014-11
影响因子：
9.1
通讯作者：
Mei Li;M. Shao;Lingyu Li;Si-hua Lu;Wen-tai Chen;Chen Wang
中科院分区：
文献类型：
--
作者：
Mei Li;M. Shao;Lingyu Li;Si-hua Lu;Wen-tai Chen;Chen Wang
甲醛 (HCHO) 是对流层大气光化学反应最重要的中间产物之一，因此了解 HCHO 来源对于有效的臭氧控制措施至关重要。这项工作的目的是区分甲醛的主要来源和次要来源。基于四川省资阳市冬季约1个月的在线测量，对环境中甲醛和可能的示踪剂（乙腈、丙烷和过氧乙酰硝酸盐）浓度进行了多元线性回归分析。结果表明，资阳市冬季，生物质燃烧对环境甲醛浓度的贡献平均为53.2%，二次过程贡献约30.1%，车源贡献7.1%。
Formaldehyde (HCHO) is one of the most important intermediate products of atmospheric photochemical reactions in the troposphere, therefore understanding of HCHO sources is essential for effective ozone control measures. The objective of this work is to distinguish between primary and secondary sources of HCHO. Based on about one month of online measurements in winter in Ziyang, Sichuan, the multi-linear regression analysis of ambient concentrations of HCHO and possible tracers (acetonitrile, propane and peroxyacetyl nitrate) was performed. The results show that during winter in Ziyang, biomass burning contributed an average of 53.2% to ambient HCHO levels, while secondary processes contributed about 30.1%, and vehicular sources accounted for 7.1%.