Related Experiment Video
Updated: Feb 8, 2026

VirWaTest, A Point-of-Use Method for the Detection of Viruses in Water Samples
Published on: May 11, 2019
[Characteristics and Source Apportionment of Water-soluble Inorganic Ions in Road Dust PM2.5 During Spring in Tianjin
Jing-Qi Zhao1, Ya-Qin Ji1, Lei Zhang1
1College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
Abstract:
In order to collect comprehensive information regarding the characteristics and sources of the water-soluble inorganic ions in road dust (RD) PM2.5 in Tianjin, samples of road dust were collected in April 2015 in Tianjin, and then re-suspended on filters using a NK-ZXF sampler. The concentrations of the major water-soluble inorganic ions were analyzed by ion chromatography. A correlation analysis, ratio method, and principal component analysis were used to analyze the sources of RD PM2.5. The results showed that the total water-soluble inorganic ion concentration in Tianjin accounted for 6.13%±2.32%, varying with different road types. Na+, K+, Mg2+, and Ca2+ showed high homology. NO3-/SO42- revealed that the main source of PM2.5 was mostly attributed to fixed sources. The principal component analysis showed that the main sources of RD PM2.5 in Tianjin were coal combustion, mobile sources, biomass burning, and construction dust.
More Related Videos
Related Concept Videos
Factors Affecting Solubility
Solubility Equilibria
The...
Solubility Equilibria: Ionic Product of Water
The ionic product of water varies with temperature, and its value is 1.0 x 10−14 at standard experimental conditions. Per Le...
Solubility of Ionic Compounds
Quadratic Equations
Quadratic Models

