CHEMICAL COMPOSITION CORRELATIONS OF SIZE-FRACTIONATED SULFATE IN NEW-YORK-CITY AEROSOL

被引：34

作者：

TANNER, RL

MARLOW, WH

NEWMAN, L

机构：

[1] Atmospheric Sciences Division, Department of Energy and Environment, Brookhaven National Laboratory, Upton

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1979年 / 13卷 / 01期

关键词：

D O I：

10.1021/es60149a006

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Aerosol samples collected in New York during August, 1976 and February, 1977 with high-volume and diffusion samplers were analyzed for strong acid, ammonium, sulfate, and nitrate. Ammonium-sulfate correlation was exceptionally high in all respirable size fractions with the average NH4+/SC>42- molar ratio about 1.5 in summer and about 2 in winter. A diurnal variation in sulfate and ammonium concentrations was observed for winter high-volume samples with maximum average values for the 6-12-h samples. Diffusion-processed samples indicated that about 50% of the sulfate was in particles <0.25 urn in diameter in the summer aerosol, but only about 25% was in this range in winter aerosol. © 1979, American Chemical Society. All rights reserved.

引用

页码：75 / 78

页数：4

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