Influence of road proximity on ambient concentrations of organic and elemental carbon fractions in coarse and fine particulate matter

2021 ◽  
Author(s):  
Tiana Carla Lopes Moreira ◽  
Shaodan Huang ◽  
Joy Lawrence ◽  
Marco A.G. Martins ◽  
Jack M. Wolfson ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Elemental Carbon ◽  
Fine Particulate Matter ◽  
Carbon Fractions ◽  
Fine Particulate ◽  
Ambient Concentrations

scholarly journals Fine Particulate Matter Pollution Characteristics and Source Apportionment of Changchun Atmosphere

2021 ◽  
Author(s):  
Jie Tang ◽  
Zhuo Yang ◽  
Yue Tui ◽  
Ju Wang
Keyword(s):  
Particulate Matter ◽  
Mass Concentration ◽  
Elemental Carbon ◽  
Motor Vehicle ◽  
Fine Particulate Matter ◽  
Water Soluble ◽  
Chemical Components ◽  
Sample Collection ◽  
Pollution Characteristics ◽  
Fine Particulate

Abstract In order to study the pollution characteristics and main sources of fine particulate matter in the atmosphere of the city of Changchun, PM2.5 samples were collected during the four seasons in 2014, and representative months for each season are January, April, July, and October. Sample collection was carried out on 10 auto-monitoring stations in Changchun, and PM2.5 mass concentration, and its chemical components (including inorganic elements, organic carbon, elemental carbon, and water-soluble ions) were measured. The results show that the annual average mass concentration of PM2.5 in Changchun in 2014 was about 66.77 µg/m3. Organic matter was the highest component in PM2.5, followed by secondary inorganic ions (SNA), mineral dust (MIN), elemental carbon (EC), and trace elements (TE). Positive Matrix Factorization (PMF) results gave seven factors, namely, industrial, biomass- and coal-burning, industrial and soil dust, motor-vehicle, soil and secondary-ion, light-industrial, and hybrid-automotive and -industrial sources in PM2.5, with contributing values of 18.9%, 24.2%, 5.7%, 23.0%, 11.5%, 13.0%, and 3.6%, respectively.

scholarly journals Research on Organic Carbon and Elemental Carbon Distribution Characteristics and Their Influence on Fine Particulate Matter (PM2.5) in Changchun City

Environments ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 21 ◽  
Author(s):  
Ju Wang ◽  
Anan Yu ◽  
Le Yang ◽  
Chunsheng Fang
Keyword(s):  
Particulate Matter ◽  
Organic Carbon ◽  
Elemental Carbon ◽  
Fine Particulate Matter ◽  
Average Concentration ◽  
Distribution Characteristics ◽  
Heating Period ◽  
Annual Average ◽  
Fine Particulate ◽  
Changchun City

In order to understand the distribution characteristics of organic carbon (OC) and elemental carbon (EC) in PM2.5 in Changchun; China; PM2.5 samples were collected from April 2017 to December 2017 using the KC-120H particulate matter sampler; and the NIOSH 5040 method was used for determination. The results showed that the average concentration of PM2.5 in Changchun was 45.92 µg/m3 (45.92 ± 50.17), and the annual average concentrations of OC and EC ranged from 15.69 to 24.32 µg/m3 and from 1.38 to 2.33 µg/m3; respectively. The annual OC/EC ratio range was 8.08–15.44; with an average of 11.70. OC and EC concentrations in spring were the lowest; whereas higher levels of both OC and EC were found in winter. Significant correlations between OC and EC were found in the non-heating period; indicating that there was a consistent or similar source; whereas OC was non-significantly correlated with EC in the heating period; suggesting that contributions of OC were from unrelated combustion sources.

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