Comparison of sulfate and nitrate particle mass concentrations measured by IMPROVE and the CDN

被引:34
作者
Ames, RB [1 ]
Malm, WC [1 ]
机构
[1] Colorado State Univ, CIRA, Natl Pk Serv, Air Resources Div, Ft Collins, CO 80523 USA
关键词
aerosol monitoring; CASTNet; measurement bias; dry deposition; visibility;
D O I
10.1016/S1352-2310(00)00369-1
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The 1977 and 1990 Amendments to the Clean Air Act call for visibility and atmospheric deposition monitoring throughout the United States. We compare sulfate and nitrate particle mass concentrations measured by two regional air quality networks, the Interagency Monitoring of PROtected Visual Environments (IMPROVE) network and the Clean Air Status and Trends Network (CASTNet), or CASTNet Deposition Network (CDN). The intent of this comparison is to quantify bias that may be introduced from differences in the respective network's sampling protocols. A number of sampling protocol differences exist between the two networks that may lead to sampling hills, particularly for particle NO3-. Observed differences between particle SO42- mass concentrations reported by the two monitoring networks are generally small, yet statistically significant at many comparison sites. Differences between particle NO3- mass concentrations are substantial, statistically significant at nearly all comparison sites, and the bias magnitude varies by geographic region. Differences in particle NO3-, based on data from monitoring sites: selected for this comparison, are 40% in the west, 56% in the interior desert/mountain region, and -9% in the east, expressed as the IMPROVE mean subtracted from the CDN mean, as a percent of the IMPROVE mean. Comparisons are made using data from 23 locations where monitoring sites from IMPROVE and CDN are within approximately 50 km. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:905 / 916
页数:12
相关论文
共 22 条
[1]   ARTIFACT PARTICULATE SULFATE AND NITRATE FORMATION ON FILTER MEDIA [J].
APPEL, BR ;
TOKIWA, Y ;
HAIK, M ;
KOTHNY, EL .
ATMOSPHERIC ENVIRONMENT, 1984, 18 (02) :409-416
[2]  
ASHBAUGH L, 1998, LOSS PARTICLE NITRAT
[3]   COMPARISON OF ANNULAR DENUDER AND FILTER PACK COLLECTION OF HNO3(G), HNO2(G), SO2(G), AND PARTICULATE-PHASE NITRATE, NITRITE AND SULFATE IN THE SOUTH-WEST DESERT [J].
BENNER, CL ;
EATOUGH, DJ ;
EATOUGH, NL ;
BHARDWAJA, P .
ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS, 1991, 25 (08) :1537-1545
[4]  
*CASTNET, 1998, EPA600R98207
[5]   EVALUATION OF FILTER-BASED AEROSOL MEASUREMENTS DURING THE 1987 SOUTHERN CALIFORNIA AIR-QUALITY STUDY [J].
CHOW, JC ;
FUJITA, EM ;
WATSON, JG ;
LU, ZQ ;
LAWSON, DR ;
ASBAUGH, LL .
ENVIRONMENTAL MONITORING AND ASSESSMENT, 1994, 30 (01) :49-80
[6]  
DURHAM JL, 1986, ATMOS ENVIRON, V21, P589
[7]  
ELDRED RA, 1988, P 81 ANN M APCA PITT
[8]  
ELDRED RA, 1993, P 86 ANN M AIR WAST
[9]   CHARACTERIZATION OF PARTICLES IN THE ARID WEST [J].
FLOCCHINI, RG ;
CAHILL, TA ;
PITCHFORD, ML ;
ELDRED, RA ;
FEENEY, PJ ;
ASHBAUGH, LL .
ATMOSPHERIC ENVIRONMENT, 1981, 15 (10-1) :2017-2030
[10]  
Graybill F.A., 1994, REGRESSION ANAL CONC