NATURE OF COARSE NITRATE PARTICLES IN THE ATMOSPHERE - A SINGLE, PARTICLE APPROACH

被引：78

作者：

WU, PM

OKADA, K

机构：

[1] Meteorological Research Institute, Tsukuba, Ibaraki

来源：

ATMOSPHERIC ENVIRONMENT | 1994年 / 28卷 / 12期

关键词：

DUST PARTICLES; SEA-SALT PARTICLES; HETEROGENEOUS REACTION; NITRATE FORMATION; INDIVIDUAL PARTICLE; ELECTRON MICROSCOPY;

D O I：

10.1016/1352-2310(94)90473-1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Aerosol particles were collected in Nagoya, a coastal city of Japan. Individual nitrate-containing particles were identified with a vapor-deposited thin film method by electron microscopy. Elemental composition of individual coarse nitrate-containing particles was determined with X-ray spectrometry. Nitrate was detected in the coarse particles in all the samples. It was observed that chemical modification of sea-salt particles by nitric acid occurred frequently in the coastal urban area. It is found that nitrate also existed on the surface of dust particles during the period of ''Kosa'' phenomenon, a yellow sand storm originating from East Asian deserts or loess areas observed in Japan. Nitrate formation through heterogeneous reactions on the dust particles may provide a removal mechanism for the nitrogen oxides in the atmosphere in ''Kosa'' phenomenon.

引用

页码：2053 / 2060

页数：8

共 36 条

[21]

Lundgren D A, 1970, J Air Pollut Control Assoc, V20, P603

[22] NITRATE FORMATION ON SEA-SALT AND MINERAL PARTICLES - A SINGLE-PARTICLE APPROACH [J].