成都市冬季不同粒径大气颗粒物水溶性无机离子的变化特征

生态学杂志

成都市冬季不同粒径大气颗粒物水溶性无机离子的变化特征

杨周^1,2,李晓东^1**,于静³,石友香³,杜锋³

(¹中国科学院地球化学研究所环境地球化学国家重点实验室，贵阳 550002； ²中国科学院大学，北京 100049； ³成都理工大学环境与土木工程学院，成都 610059)

出版日期:2013-03-10 发布日期:2013-03-10

Variation characteristics of water-soluble inorganic ions in size-segregated atmospheric particles in Chengdu in winter.

YANG Zhou^1,2, LI Xiao-dong^1**, YU Jing³, SHI You-xiang³, DU Feng³

(¹State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China; ² University of Chinese Academy of Sciences, Beijing 100049, China; ³College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, China)

Online:2013-03-10 Published:2013-03-10

摘要/Abstract

摘要：

利用Anderson冲击式分级采样器，在2010年冬季采集了成都市城东区不同粒径的大气颗粒物样品，分析了9种水溶性离子（SO₄^2-、NO₃^-、Cl^--、F^--、NH₄⁺、Ca²⁺、Mg²⁺、K⁺、Na⁺）的含量，并探讨其分布变化特征。SO₄^2-、NO₃^-、NH₄⁺、Cl^-、K⁺、Na⁺等离子主要集中在粒径为3.3～0.65 μm的细颗粒物中，而Ca²⁺、Mg²⁺则集中在粒径为11～4.7 μm的粗颗粒物中。SO₄^2-、NO₃^-、NH₄⁺、Ca²⁺是主要的无机离子；在不同天气条件下，SO₄^2-、NO₃^-的质量浓度按雾天、阴天、雨天递减，且雾天较阴天高2.5倍左右，较雨天高5倍左右，而其他离子也高出2倍左右；在不同粒径颗粒物中\[NO₃^-\]/\[SO₄^2-\]比值均较小（<1），说明成都市目前仍然以固定（燃煤）污染源为主，移动污染源（汽车尾气）的影响正逐步增强。

关键词: 辽东栎种群, 龄级结构, 生命表, 存活曲线

Abstract: By means of the Andersen stage sampler, size-segregated atmospheric particles were collected in Chengdu City in winter, 2010. The size distribution spectra of major water-soluble inorganic ions (SO₄^2-, NO₃^-, Cl^-, F^-, NH₄⁺, Ca²⁺, Mg²⁺, K⁺, and Na⁺) were determined. Mass contents of SO₄^2-, NO₃^-, NH₄⁺, Cl^-, K⁺ and Na⁺ mainly concentrated in the fine particles within the size range of 3.3-0.65 μm, and those of Ca²⁺ and Mg²⁺ concentrated in the coarse particles (11.0-4.7 μm). SO₄^2-, NO₃^-, NH₄⁺ and Ca²⁺ were the major inorganic ions in the collected atmospheric particles. Under different weather conditions, mass concentrations of SO₄^2- and NO₃^- decreased in sequence of foggy day, cloudy day and rainy day, and their contents in the foggy day were about 2.5 and 5 times higher than that in cloudy day and rainy day, respectively. Accordingly, the other ions were also about 2 times higher. In the all sizesegregated particles, the ratios of \[NO₃^-\]/\[SO₄^2-\] were less than 1.0, indicating that the air pollution in Chengdu City are still dominated by stationary source (coal combustion) while the mobile pollution source (main as vehicle exhaust) is becoming increasingly important.

Key words: Quercus wutaishanica population, age structure, life table, survival curve.

杨周1,2,李晓东1**,于静3,石友香3,杜锋3. 成都市冬季不同粒径大气颗粒物水溶性无机离子的变化特征[J]. 生态学杂志.

YANG Zhou1,2, LI Xiao-dong1**, YU Jing3, SHI You-xiang3, DU Feng3. Variation characteristics of water-soluble inorganic ions in size-segregated atmospheric particles in Chengdu in winter.[J]. cje.

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