Design, Evaluation and Application of a Continuously Stirred Tank Reactor System for Use in Nitric Acid Air Pollutant Studies

被引：0
|
作者：
Pamela E. Padgett
Andrzej Bytnerowicz
Philip J. Dawson
George H. Riechers
Dennis R. Fitz
机构：
[1] USDA-FS,Pacific Southwest Forest and Range Experiment Station
[2] Forest Fire Laboratory,Center for Environmental Research and Technology
[3] University of California,undefined
来源：
Water, Air, and Soil Pollution | 2004年 / 151卷
关键词：
air pollution; dry deposition; fumigation studies; nitrogen deposition;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Nitric acid (HNO3) vapor is a significant component of air pollution. Dry deposition of HNO3 is thought to be a major contributor to terrestrial loading of anthropogenically-derived nitrogen (N), but many questions remain regarding the physico-chemical process of deposition and the biological responses to accumulation of dry-deposited HNO3 on surfaces. To examine these processes experimentally, a continuously stirred tank reactor (CSTR) fumigation system has been constructed. This system enables simultaneous fumigation at several concentrations in working volumes 1.3 m dia by 1.3 m ht, allowing for simultaneous fumigation of many experimental units. Evaluation of the system indicates that it is appropriate for long-term exposures of several months duration and capable of mimicking patterns of diurnal atmospheric HNO3 concentrations representative of areas with different levels of pollution.
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页码：35 / 51
页数：16
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