墨西哥城大气中甲醛和乙醛的测量

Measurements of formaldehyde and acetaldehyde in the atmosphere of Mexico City.

作者信息

Baez A P, Belmont R, Padilla H

机构信息

Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México, México DF 04510, México.

出版信息

Environ Pollut. 1995;89(2):163-7. doi: 10.1016/0269-7491(94)00059-m.

DOI:10.1016/0269-7491(94)00059-m

PMID:15091529

Abstract

Ambient levels of carbonyls were measured at the University of Mexico campus, Mexico City. Only formaldehyde and acetaldehyde were measured, since aldehydes with higher molecular weight were not detected. The most abundant aldehyde was formaldehyde, with an overall ratio CH3CHO/H2CO of 0.43. Maximum concentrations occurred for formaldehyde at 10:00 h while for acetaldehyde at 8:00 h. Comparing the concentration measured in this work with those in urban areas it was found that the formaldehyde and acetaldehyde levels in Mexico City are among the highest reported in the literature.

摘要

在墨西哥城的墨西哥大学校园内对羰基化合物的环境水平进行了测量。仅测量了甲醛和乙醛，因为未检测到分子量更高的醛类。含量最高的醛是甲醛，CH3CHO/H2CO的总体比例为0.43。甲醛的最高浓度出现在10:00，而乙醛的最高浓度出现在8:00。将本研究中测得的浓度与城市地区的浓度进行比较后发现，墨西哥城的甲醛和乙醛水平在文献报道中处于最高之列。