Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/74843
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Civil and Environmental Engineering | en_US |
dc.contributor | Department of Civil and Environmental Engineering | - |
dc.contributor | Research Institute for Sustainable Urban Development | - |
dc.creator | Lyu, XP | en_US |
dc.creator | Guo, H | en_US |
dc.creator | Cheng, HR | en_US |
dc.creator | Wang, DW | en_US |
dc.date.accessioned | 2018-03-29T09:34:02Z | - |
dc.date.available | 2018-03-29T09:34:02Z | - |
dc.identifier.issn | 0045-6535 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/74843 | - |
dc.language.iso | en | en_US |
dc.publisher | Elsevier Ltd | en_US |
dc.rights | © 2017 Elsevier Ltd. All rights reserved. | en_US |
dc.rights | © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. | en_US |
dc.rights | The following publication Lyu, X. P., Guo, H., Cheng, H. R., & Wang, D. W. (2017). New particle formation and growth at a suburban site and a background site in Hong Kong. Chemosphere, 193, 664-674 is available at https://doi.org/10.1016/j.chemosphere.2017.11.060 | en_US |
dc.subject | Atmospheric nanoparticle | en_US |
dc.subject | New particle formation | en_US |
dc.subject | Particle growth | en_US |
dc.subject | Sulfuric acid vapor | en_US |
dc.subject | Volatile organic compound | en_US |
dc.title | New particle formation and growth at a suburban site and a background site in Hong Kong | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 664 | en_US |
dc.identifier.epage | 674 | en_US |
dc.identifier.volume | 193 | en_US |
dc.identifier.doi | 10.1016/j.chemosphere.2017.11.060 | en_US |
dcterms.abstract | Atmospheric nanoparticles have great impacts on human health and global climate change. The number concentrations and size distributions of nanoparticles in the size range of 5.5–350.4 nm were detected at a background site and a suburban site in Hong Kong from summer to winter in 2011 and in autumn of 2013, respectively. Significantly higher particle number concentrations in all modes were observed at the suburban site (p < 0.05) during the sampling periods, possibly due to stronger primary emissions/regional transport and more intensive new particle formation (NPF). Particle number concentrations were much enhanced under northerly winds at both sites, resulting from regional transport of Aitken and accumulation mode particles, enhanced local NPF and occasionally low condensation sink. NPF was mainly limited by the precursors of condensable vapors and oxidative capacity of the atmosphere at the background site and the suburban site, respectively. In most cases, the formation rate of 5.5 nm particles was a function of sulfuric acid vapor to the power of 1.32 ± 0.34 at the background site and 0.81 ± 0.31 at the suburban site, abiding by the cluster activation theory. However, ozonolysis of monoterpenes (particularly α-pinene) might also drive NPF, particularly in the afternoon. These reactions also contributed to the growth of nucleation mode particles, which was largely explained by sulfuric acid vapor (73.6 ± 10% at the background site and 60.4 ± 9.8% at the suburban site). In contrast, the oxidations of isoprene, β-pinene and aromatics (particularly xylenes and trimethylbenzenes) were found to participate in the growth of Aitken mode particles. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Chemosphere, Feb. 2018, v. 193, p. 664-674 | en_US |
dcterms.isPartOf | Chemosphere | en_US |
dcterms.issued | 2018-02 | - |
dc.identifier.scopus | 2-s2.0-85034420735 | - |
dc.identifier.eissn | 1879-1298 | en_US |
dc.identifier.rosgroupid | 2017002661 | - |
dc.description.ros | 2017-2018 > Academic research: refereed > Publication in refereed journal | en_US |
dc.description.validate | 201803 bcma | en_US |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | RGC-B1-099 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | The National Natural Science Foundation of China; The Hong Kong Polytechnic University; Research Institute for Sustainable Urban Development of Hong Kong Polytechnic University | en_US |
dc.description.pubStatus | Published | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Lyu_New_Particle_Formatigrowth.pdf | Pre-Published version | 1.71 MB | Adobe PDF | View/Open |
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