Diurnal and seasonal variation of volatile organic compounds in the atmosphere of Monterrey, Mexico

被引：29

作者：

Lizette Menchaca-Torre, H. ^{[1
]}

Mercado-Hernandez, Roberto ^{[2
]}

Mendoza-Dominguez, Alberto ^{[1
]}

机构：

[1] Monterrey Inst Technol, Dept Chem Engn, Col Tecnol, Monterrey Campus,Eugenio Garza Sada 2501 S, Monterrey 64849, Mexico

[2] Autonomous Univ Nuevo Leon, Sch Biol Sci, San Nicolas De Los Garza 66450, Mexico

来源：

ATMOSPHERIC POLLUTION RESEARCH | 2015年 / 6卷 / 06期

关键词：

Volatile organic compounds; Air pollution; Ozone isopleths; Mexico; SOURCE IDENTIFICATION; SOURCE APPORTIONMENT; REACTIVITY SCALES; AIR; EMISSIONS; CITY; HYDROCARBONS; CHEMISTRY; GASOLINE; RATIOS;

D O I：

10.1016/j.apr.2015.06.004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Volatile organic compounds (VOCs) were characterized in Monterrey, the third largest city in Mexico. In total, 53 VOCs were characterized, of which 29 were analyzed. Three sampling campaigns were performed during the spring of 2011 and the spring and the fall of 2012, using 4-h time intervals from 6: 00 am to 10: 00 pm. Measurements were performed on the premises of a monitoring station located in downtown Monterrey. The highest concentrations were found in the fall; the two spring measurements exhibited no statistically significant differences. VOC concentrations exhibited a marked diurnal behavior with higher concentrations during the morning intervals. Solar radiation peaked during the noon interval, allowing for greater secondary pollutant production. VOCs reached their lowest levels in the 14: 00-18: 00 time interval. Correlation analysis found evidence of mobile sources, fugitive fuel emissions, and the use of solvents as possible sources of the majority of the compounds. Additionally, the VOC-O-3-NOx relationship was studied. The results indicate that the atmosphere in Monterrey, Mexico is sensitive to the concentration of VOCs. Copyright (c) 2015 Turkish National Committee for Air Pollution Research and Control. Production and hosting by Elsevier B.V. All rights reserved.

引用

页码：1073 / 1081

页数：9

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