青岛总悬浮颗粒物中水溶性离子的时间变化、来源解析和环境效应

李逗; 王艳; 刘汝海; 孙浩麟; 尹萍萍; 周续缘; 莫冰; 李冬婷

doi:10.13205/j.hjgc.202308014

青岛总悬浮颗粒物中水溶性离子的时间变化、来源解析和环境效应

doi: 10.13205/j.hjgc.202308014

李逗^1,2,
王艳^1,2,
刘汝海^1,2, ,,
孙浩麟^1,2,
尹萍萍^1,2,
周续缘^1,2,
莫冰^1,2,
李冬婷^1,2

1. 中国海洋大学环境科学与工程学院, 山东青岛 266100;
2. 中国海洋大学海洋环境与生态教育部重点实验室, 山东青岛 266100

基金项目:

山东省自然科学基金项目(ZR2020MD118,ZR2018MD004)

国家自然科学基金项目(41506128)

详细信息

作者简介:
李逗(1997-),女,硕士,主要研究方向为大气环境化学。1742888219@qq.com

通讯作者:
刘汝海(1975-),男,副教授,主要从事污染元素生物地球化学循环研究。ruhai@ouc.edu.cn

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- 被引次数: 0
出版历程
- 收稿日期: 2022-11-24
- 网络出版日期: 2023-11-15

TEMPORAL VARIATION, SOURCE ANALYSIS AND ENVIRONMENTAL EFFECTS OF WATER-SOLUBLE IONS IN TSP IN QINGDAO

LI Dou^1,2,
WANG Yan^1,2,
LIU Ruhai^{1,2
, ,},
SUN Haolin^1,2,
YIN Pingping^1,2,
ZHOU Xuyuan^1,2,
MO Bing^1,2,
LI Dongting^1,2

1. College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;
2. Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China

摘要

摘要: 为揭示青岛大气污染变化特征及其向近海营养物质的输送,对其大气颗粒物中水溶性组分进行长期研究。于2019-11—2021-04期间采集总悬浮颗粒物(TSP)样品,测定了 9种水溶性无机离子(WSIIs)含量,研究其时间变化、来源和环境效应。结果表明:青岛市TSP中ρ(WSIIs)为(32.0±6.51) μg/m³,主要离子为NO^-₃、SO^2-₄和NH⁺₄,2013年后受能源结构调整和污染防控政策影响,SO^2-₄浓度明显下降,NO^-₃浓度增加。NO^-₃和NH⁺₄浓度呈冬季＞春季＞秋季＞夏季,SO^2-₄浓度呈冬季＞夏季＞春季＞秋季,夏季太阳辐射强、气温高,NO^-₃和NH⁺₄易于分解和挥发使其浓度最低;冬季受来自蒙古和华北的内陆气团、燃煤供暖和不利的大气扩散条件影响,WSIIs浓度最高;夏季强太阳辐射利于SO^2-₄的生成,同时夏季风使海源性硫酸盐输入增加,导致SO^2-₄浓度偏高。年均ρ(NO^-₃)/ρ(SO^2-₄)比值>1,以移动源污染为主;各季节SOR、NOR均>0.1,氮、硫的二次生成率较高。NH⁺₄-N、NO^-₃-N营养盐的沉降通量分别为48.8,87.0 mmol/(m²·a),氮沉降通量的相对升高将加剧近海浮游植物生长的磷限制。
- 总悬浮颗粒物 /
- 水溶性离子 /
- 季节变化 /
- 来源分析 /
- 氮沉降
Abstract: A long-term study of water-soluble fractions in atmospheric particulate matter in Qingdao was conducted to reveal the characteristics of atmospheric pollution changes and their nutrient transportation to offshore. Total suspended particulate matter (TSP) samples were collected from 2019-11 to 2021-04, and the contents of nine water soluble inorganic ions (WSIIs) were measured to evaluated their temporal changes, sources, and environmental effects. The results showed that the concentration of WSIIs in Qingdao TSP was (32.0±6.51) μg/m³, and the main ions were NO₃^-, SO₄^2- and NH₄⁺. After 2013, influenced by energy structure adjustment and pollution prevention and control policies, the concentration of SO₄^2- decreased significantly and the concentration of NO₃^- increased. The concentration of NO₃^- and NH₄⁺ was in the order of winter>spring>autumn>summer, and the concentration of SO₄^2- was in the order of winter>summer>spring>autumn. With strong solar radiation and high temperature in summer, NO₃^- and NH₄⁺ were easily decomposed and volatilized, resulting in the lowest concentrations in summer; WSIIs concentrations were highest in winter due to inland air masses transportation from Mongolia and North China, coal heating and unfavorable atmospheric dispersion conditions; strong solar radiation in summer facilitated SO₄^2- production, while summer winds increased sea-sourced sulfate input, resulting in high SO₄^2- concentrations in summer. The annual average ρ(NO₃^-)/ρ(SO₄^2-) ratio was greater than 1, and mobile source pollution was dominant; SOR and NOR were greater than 0.1 in all seasons, and secondary production rates of nitrogen and sulfur were high. Sink fluxes of NH₄⁺-N and NO₃^--N nutrients were 48.8, 87.0 mmol/(m²·a), respectively, and the relative increase in nitrogen sink fluxes would exacerbate the phosphorus limitation of offshore phytoplankton growth.
- TSP /
- water-soluble ions /
- seasonal changes /
- source analysis /
- nitrogen deposition

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