Document Detail


Determination of atmospheric nitrogen input to Lake Greenwood, South Carolina--I. PM measurements.
MedLine Citation:
PMID:  12540046     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The Reedy River branch of Lake Greenwood, SC, has repeatedly experienced summertime algal blooms, upsetting the natural system. This lake's shallow depth makes It susceptible to atmospheric influence. A series of experiments were carried out in order to investigate the effect of atmospheric nitrogen deposition into the lake. Nitrogen was examined because of the insignificant phosphorus dry atmospheric flux and the unique nutrient demands of the dominant algae (Pithophora oedogonia) contributing to the blooms. In this paper, results are presented, of the experimental measurement of coarse and fine atmospheric concentrations of atmospheric particulate nitrogen adjacent to and in the watershed of the Reedy River (downtown Greenville) and Lake Greenwood. Experiments were carried out during four 24-hr periods in January 2001 and again during four 24-hr periods in March 2001. Results are presented here for atmospheric particulate nitrogen as well as other constituents of the airborne aerosol. Mass concentrations of PM2.5 averaged 14.0 and 21 microg/m3 for Lake Greenwood and downtown Greenville, respectively. Mass concentrations of total suspended particulates (TSP) averaged 22.6 and 38.5 microg/m3 for Lake Greenwood and downtown Greenville, respectively. This ambient aerosol concentration was apportioned to its chemical constituents, and the greatest contributors to PM2.5 mass were organics (45 and 42% for downtown Greenville and the lake, respectively) and sulfate (14.1 and 19.7% for downtown Greenville and the lake, respectively). The information gathered here, despite its episodic nature, is important not only in determining atmospheric nitrogen but also in documenting the composition of aerosol in South Carolina, which so far has not been studied. In a companion paper, results for gaseous pollutants as well as thermodynamic modeling of the aerosol and nitrogen flux determinations are presented.
Authors:
Andrew S Imboden; Christos S Christoforou; Lynn G Salmon
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the Air & Waste Management Association (1995)     Volume:  52     ISSN:  1096-2247     ISO Abbreviation:  J Air Waste Manag Assoc     Publication Date:  2002 Dec 
Date Detail:
Created Date:  2003-01-23     Completed Date:  2003-02-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9503111     Medline TA:  J Air Waste Manag Assoc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1411-21     Citation Subset:  IM    
Affiliation:
Department of Environmental Engineering and Science, Clemson University, Clemson, South Carolina, USA.
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MeSH Terms
Descriptor/Qualifier:
Aerosols
Air Pollutants / analysis*
Environmental Monitoring
Eutrophication
Nitrogen / analysis*
Particle Size
South Carolina
Water Pollutants / analysis*
Chemical
Reg. No./Substance:
0/Aerosols; 0/Air Pollutants; 0/Water Pollutants; 7727-37-9/Nitrogen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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