| 本文已被：浏览 1336次 下载 971次 |
码上扫一扫！ |
|
|
| 青岛沿海地区春季大气颗粒物矿物组成特征和来源分析 |
|
冯旭光1,2, 蒋富清1,3, 朱潇1,2, 张晋1,2, 董江1,2, 王长庆4, 李安春1
|
|
1.中国科学院海洋研究所, 中国科学院海洋地质与环境重点实验室, 山东 青岛 266071;2.中国科学院大学, 北京 100049;3.青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室, 山东 青岛 266061;4.中国地质大学(武汉)工程学院, 湖北 武汉 430074
|
|
| 摘要: |
| 2016年春季在青岛地区采集总悬浮颗粒物样品，利用X-射线衍射仪对其碎屑和黏土矿物进行分析，结果表明在不同空气质量采集的样品中，矿物组成有明显差异。对较差天气下采集的样品进行黏土矿物分析，识别出伊利石、蒙皂石、绿泥石和高岭石等4种主要黏土矿物。利用蒙皂石-伊利石-高岭石三角图解、亚洲沙尘暴数值预报系统和颗粒物后向轨迹分析，对较差天气下采集的颗粒物来源进行分析，发现颗粒物主要来自亚洲内陆（组分百分比48.3%）和青岛附近地区（组分百分比51.7%）；利用后向轨迹对较好天气下采集的样品分析，发现颗粒物不仅有亚洲内陆（组分百分比34.43%）和青岛附近地区的来源（组分百分比42.62%），还有东南向气流搬运而来的海盐颗粒物（组分百分比22.95%）。通过以上研究，对青岛地区春季大气颗粒物的矿物组成和来源有了详细的认识，对于了解大气颗粒物对青岛沿海地区空气质量、海洋生态环境的影响具有重要的意义。 |
| 关键词: 大气颗粒物 碎屑矿物 黏土矿物 后向轨迹分析 |
| DOI：10.11759/hykx20180413001 |
| 分类号:P532;P736.21 |
| 基金项目:国家自然科学基金项目（41576050，41776065）；中国科学院战略性先导科技专项（A）类（XDA11030302）；全球变化与海气相互作用专项（GASI-GEOGE-02） |
|
| Mineral composition and source of the atmospheric parti-culates in coastal areas of Qingdao in spring |
|
FENG Xu-guang1,2, JIANG Fu-qing1,3, ZHU Xiao1,2, ZHANG Jin1,2, DONG Jiang1,2, WANG Chang-qing4, LI An-chun1
|
|
1.CAS Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;2.University of Chinese Academy of Sciences, Beijing 100049, China;3.Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266061, China;4.Faculty of Engineering, China University of Geosciences(Wuhan), Wuhan 430074, China
|
| Abstract: |
| In the spring of 2016, we collected the total suspended particulate matter in Qingdao area and studied the detrital minerals and clay minerals, as well as analyzed the sources and origins of the particulate matter. The results of X ray diffraction analysis showed that there are significant differences in the mineral composition of atmospheric dust samples collected from two different air qualities. Through the analysis of clay minerals collected from the poor-quality air, four main clay minerals, namely illite, smectite, chlorite, and kaolinite were identified. According to the triangular plot of smectite-illite-kaolinite, Asian dust storm prediction model, and hybrid single particle Lagrangian integrated trajectory model, we found that these particles in the poor-quality air mainly come from the arid Asian interior (48.3%) and the vicinity of Qingdao (51.7%). Through a back-trajectory analysis based on the hybrid single particle Lagrangian integrated trajectory model, we found that not only does the particles collected from the good-quality air originate from the arid Asian interior (34.43%) and the vicinity of Qingdao (42.62%), but also there are sea-salt particles transported from the southeast of Qingdao (22.95%). Through this study, we comprehensively understand the mineral composition and source of atmospheric particulate matter in Qingdao in the spring, which further improves our understanding on the impact of atmospheric particulates on air quality and marine ecological environment in the coastal areas of Qingdao. |
| Key words: atmospheric particulates detrital minerals clay minerals backward trajectory analysis |