AIR-POLLUTION IN SOUTHERN CALIFORNIA MUSEUMS - INDOOR AND OUTDOOR LEVELS OF NITROGEN-DIOXIDE, PEROXYACETYL NITRATE, NITRIC-ACID, AND CHLORINATED HYDROCARBONS

被引：39

作者：

HISHAM, MWM ^{[1
]}

GROSJEAN, D ^{[1
]}

机构：

[1] DGA INC,4526 TELEPHONE RD,SUITE 205,VENTURA,CA 93003

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1991年 / 25卷 / 05期

关键词：

D O I：

10.1021/es00017a004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A survey of the air pollutants nitrogen dioxide, peroxyacetyl nitrate, methylchloroform, tetrachloroethylene, and nitric acid has been carried out at nine Southern California museums. Highest indoor levels were 120 ppb for NO2, 14 ppb for PAN, 10 ppb for nitric acid, and more than 12 and 30 ppb for Cl2C = CCl2 and CH3CCl3, respectively. At all but one museum, indoor concentrations of NO2, PPN, and nitric acid were comparable to outdoor levels and closely followed outdoor variations, thus indicating rapid indoor/outdoor air exchange. At six of the nine institutions surveyed, indoor levels of chlorinated hydrocarbons were higher than outdoor concentrations, thus pointing to indoor sources. At museums lacking air conditioning (HVAC) systems, indoor levels of air pollutants were essentially identical with outdoor ones. At institutions with HVAC, levels of NO2, PAN, chlorinated hydrocarbons, and the corresponding indoor/outdoor ratios were high and indicated only modest removal by the HVAC system. Of the three museums equipped with HVAC and chemical filtration, only one yielded low indoor pollutant concentrations and low indoor/outdoor ratios.

引用

页码：857 / 862

页数：6

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[2]

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[3]

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