SIZE DISTRIBUTION AND CHEMICAL COMPOSITION OF ATMOSPHERIC PARTICULATE NITRATE IN NAGOYA AREA

被引：55

作者：

KADOWAKI, S ^{[1
]}

机构：

[1] AICHI ENVIRONM RES CTR, KITA KU, NAGOYA 462, JAPAN

来源：

ATMOSPHERIC ENVIRONMENT | 1977年 / 11卷 / 08期

关键词：

D O I：

10.1016/0004-6981(77)90174-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The size distribution and chemical composition of atmospheric nitrate particles were investigated. A variety of size distributions of nitrate was measured in Nagoya, Japan. Air samples were collected and size-fractionated in cascade impactors. Size-classified particles were extracted with water and alcohol. The concentrations of nitrate were measured by specific ion electrode and absorption spectrophotometry. The chemical composition of nitrate was identified by paper chromatography. The size distributions of nitrate were bimodal. One modal diameter was approximately 0.4-0.6 .mu.m, the other approximately 3-5 .mu.m. The shapes of the size distribution curves changed periodically with the season. From the analysis by paper chromatography, the submicron nitrate was NH4NO3 and the coarse nitrate was NaNO3. A strong relationship between size distributions of nitrate and meteorological conditions was found. The mechanisms of nitrate formation in the atmosphere are also discussed.

引用

页码：671 / 675

页数：5

共 14 条

[1] A SAMPLER FOR RESPIRATORY HEALTH HAZARD ASSESSMENT [J].