Articles online

Chemical Composition and Bacterial Community in Size-Resolved Cloud Water at the Summit of Mt. Tai, China

Category: Others

Article In Press
DOI: 10.4209/aaqr.2016.11.0493
PDF | Supplemental material | RIS | BibTeX

Chao Zhu1, Jianmin Chen 1,2,3, Xinfeng Wang1, Jiarong Li1, Min Wei1, Caihong Xu1, Xianmang Xu1, Aijun Ding3, Jeffrey L. Collett Jr.4

  • 1 Environment Research Institute, School of Environmental Science and Engineering, Shandong University, Ji’nan 250100, China
  • 2 Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science and Engineering, Institute of Atmospheric Sciences, Fudan University, Shanghai 200433, China
  • 3 Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing, Jiangsu 210008, China
  • 4 Department of Atmospheric Science, Colorado State University, Fort Collins, CO 80523, USA


Size-resolved cloud samples were collected via a three-stage collector at Mt. Tai.
The pH value tended to decrease with the declining droplets size.
Dominant ions (NH4+, SO42–, NO3 and Ca2+) showed diverse regular size distribution.
Difference existed among the size-resolved bacterial community.
The pH value, H2O2, NO2 and trace metals had complex impacts on bacterial community.


A three-stage collector was used to collect size-resolved cloud samples at the summit of Mt. Tai. Subsequently, analyses of pH values, water-soluble ions, and trace metals were performed and bacterial community were conducted using MiSeq amplicon sequencing. The pH values of the samples decreased as droplet sizes decreased. Sulfate (SO42–), nitrate (NO3) and ammonium (NH4+) were the main secondary inorganic ions which their concentration distributed significantly different from size-resolved cloud water. The NH4+ concentration was higher in smaller droplets. The SO42– and NO3 concentrations were higher in larger droplets. The Ca2+ concentration increased as droplet size increased. Small droplet samples tended to have lower pH value, mainly because of the more acidic (SO42– and NO3) and less acid-neutralizing (NH4+ and Ca2+) components. The bacterial community in size-resolved cloud samples were firstly recognized and dominated by the genera of Lactococcus (average abundance 34.9%) and Bacillus (average abundance 34.0%). Linear discriminant analysis effect size (LEfSe) revealed differences of the bacterial community in size-resolved cloud water samples, which was probably caused by the bacterial size. Redundancy analysis suggested several minor correlations that the H2O2, NO2 concentrations, and trace metals exert effects on the bacterial community.


Cloud sample Three-stage collector Chemical composition Bacterial community

Related Article

Preparation of Fe2O3/Al2O3 and Fe2O3/TiO2 Pellets as Oxygen Carrier for Chemical Looping Process

Young Ku , Pao-Hsien Lin, Hsuan-Chih Wu, Yu-Cheng Liu, Yao-Hsuan Tseng, Hao-Yeh Lee
Accepted Manuscripts
DOI: 10.4209/aaqr.2017.03.0121

ENSO Influence on Coastal Fog-Water Yield in the Atacama Desert, Chile

Camilo del Río , Juan-Luis Garcia, Pablo Osses, Nicolás Zanetta, Fabrice Lambert, Daniela Rivera, Alexander Siegmund, Nils Wolf, Pilar Cereceda, Horacio Larraín, Felipe Lobos
Accepted Manuscripts
DOI: 10.4209/aaqr.2017.01.0022

Characterization and Modeling of Fog in the Mexico Basin

Pohema González-Viveros, Ernesto Caetano, Fernando García-García
Accepted Manuscripts
DOI: 10.4209/aaqr.2016.12.0548

Atmospheric Emission Characteristics and Control Policies of Anthropogenic VOCs from Industrial Sources in Yangtze River Delta Region, China

Chenghang Zheng, Jiali Shen, Yongxin Zhang, Xinbo Zhu, Xuecheng Wu, Linghong Chen, Xiang Gao
Accepted Manuscripts
DOI: 10.4209/aaqr.2016.06.0234