Publication detail

Nanoparticle Number Concentration in the Air in Relation to the Time of the Year and Time of the Day

BRZEZINA, J. KÖBÖLOVÁ, K. ADAMEC, V.

Original Title

Nanoparticle Number Concentration in the Air in Relation to the Time of the Year and Time of the Day

Type

journal article in Web of Science

Language

English

Original Abstract

The paper analyzes suspended particles number concentrations of 61 size fractions (184 nm to 17,165 nm) in the air at a traffic location. The average course of the individual fractions was analyzed at various intervals - daily, weekly, monthly and annually, in the period between 2017 and 2019. The data was then used to calculate the arithmetic mean for all the fractions (MS Excel, R) and then using a proprietary web application, heatmaps were constructed. The obtained results showed significant differences in both the annual and daily variation of number concentrations between the individual fractions differing in particle size. In the case of the annual variation, one can see a greater variability of smaller particles, which is most likely due to the source of the actual suspended particles. Meteorological and dispersion conditions are found as important factors for suspended particle concentrations. These can lead to significant differences from year to year. However, a comparison between 2018 and 2019 showed that even though the average absolute number concentrations can differ between years, the actual relative number concentrations, i.e., the ratios between the individual fractions remain very similar. In conclusion it can be said that the difference between the number concentration variation of the size fractions depends on both the actual pollution sources (especially in the long-term, i.e., the annual variation) and the actual size of the particles, which plays a role especially in the short-term (daily, weekly variation).

Keywords

PM pollution; seasonality; air quality; meteorological conditions

Authors

BRZEZINA, J.; KÖBÖLOVÁ, K.; ADAMEC, V.

Released

19. 5. 2020

Publisher

MDPI

Location

BASEL

ISBN

2073-4433

Periodical

Atmosphere

Year of study

11

Number

5

State

Swiss Confederation

Pages from

1

Pages to

13

Pages count

13

URL

https://www.mdpi.com/2073-4433/11/5/523

Full text in the Digital Library

http://hdl.handle.net/11012/193479

BibTex

@article{BUT164046,
  author="Jáchym {Brzezina} and Klaudia {Köbölová} and Vladimír {Adamec}",
  title="Nanoparticle Number Concentration in the Air in Relation to the Time of the Year and Time of the Day",
  journal="Atmosphere",
  year="2020",
  volume="11",
  number="5",
  pages="1--13",
  doi="10.3390/atmos11050523",
  issn="2073-4433",
  url="https://www.mdpi.com/2073-4433/11/5/523"
}