Sources and chemistry of PM(10) aerosol in Santa Barbara County, CA

被引：86

作者：

Chow, JC ^{[1
]}

Watson, JG ^{[1
]}

Lowenthal, DH ^{[1
]}

Countess, RJ ^{[1
]}

机构：

[1] COUNTESS ENVIRONM, WESTLAKE VILLAGE, CA 91361 USA

来源：

ATMOSPHERIC ENVIRONMENT | 1996年 / 30卷 / 09期

关键词：

Santa Barbara; CMB source apportionment; marine aerosol; aerosol acidity;

D O I：

10.1016/1352-2310(95)00363-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

PM(10) aerosols were collected during 1989 every sixth day at six sites in Santa Barbara County, CA. Samples were analyzed for sulfate, nitrate, and ammonium ions, carbon, and elements. Chemical Mass Balance (CMB) receptor modeling was conducted to determine the sources of PM(10). Motor vehicles, road dust, and marine aerosol accounted for 30-42, 25-27, and 18-23% of PM(10), respectively, at three urban sites: Santa Barbara, Santa Maria, and Santa Ynez. The marine contribution was 55-63% of PM(10) at two marine background sites. Fresh marine aerosols were characterized by low levels of urban emissions, low concentrations of secondary sulfate and nitrate, and generally higher levels of acidity. Conversely, marine aerosols aged by contact with land-based emissions had higher concentrations of secondary ammonium sulfate and nitrate.

引用

页码：1489 / 1499

页数：11

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