Research on Organic Carbon and Elemental Carbon Distribution Characteristics and Their Influence on Fine Particulate Matter (PM<sub>2.5</sub>) in Changchun City
In order to understand the distribution characteristics of organic carbon (OC) and elemental carbon (EC) in PM<sub>2.5</sub> in Changchun; China; PM<sub>2.5</sub> samples were collected from April 2017 to December 2017 using the KC-120H particulate matter sampler; and the NIO...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-02-01
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| Series: | Environments |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3298/6/2/21 |
| Summary: | In order to understand the distribution characteristics of organic carbon (OC) and elemental carbon (EC) in PM<sub>2.5</sub> in Changchun; China; PM<sub>2.5</sub> 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 PM<sub>2.5</sub> in Changchun was 45.92 µg/m<sup>3</sup> (45.92 ± 50.17), and the annual average concentrations of OC and EC ranged from 15.69 to 24.32 µg/m<sup>3</sup> and from 1.38 to 2.33 µg/m<sup>3</sup>; 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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| ISSN: | 2076-3298 |