Investigation of biomass burning chemical components over Northern Southeast Asia during 7-SEAS/BASELInE 2014 campaign
© Taiwan Association for Aerosol Research. This study investigates the chemical components of biomass burning (BB) aerosols obtained from Doi Ang Khang (DAK; near BB source) and Chiang Mai University (CMU; an urban location) over northern Southeast Asia in dry season (March to mid-April) 2014. PM2.5...
Saved in:
Main Authors: | , , , , , , , |
---|---|
Format: | Journal |
Published: |
2018
|
Subjects: | |
Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85007399054&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/55854 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Chiang Mai University |
id |
th-cmuir.6653943832-55854 |
---|---|
record_format |
dspace |
spelling |
th-cmuir.6653943832-558542018-09-05T03:02:24Z Investigation of biomass burning chemical components over Northern Southeast Asia during 7-SEAS/BASELInE 2014 campaign Chanakarn Khamkaew Somporn Chantara Rungruang Janta Shantanu Kumar Pani Tippawan Prapamontol Sawaeng Kawichai Wan Wiriya Neng Huei Lin Environmental Science © Taiwan Association for Aerosol Research. This study investigates the chemical components of biomass burning (BB) aerosols obtained from Doi Ang Khang (DAK; near BB source) and Chiang Mai University (CMU; an urban location) over northern Southeast Asia in dry season (March to mid-April) 2014. PM2.5(particulate matter with an aerodynamic diameter less than or equal to 2.5 μm) samples were collected over a 24-h sampling period as a part of the Seven South East Asian Studies (7-SEAS)/BASELInE (BB Aerosols & Stratocumulus Environment: Lifecycles & Interactions Experiment) campaign. The collected aerosols were analyzed for mass concentrations of ions, metals and levoglucosan. The influence of air mass movements on aerosol species was also analyzed. The average PM2.5mass concentrations at DAK (80.8–83.3 μg m–3) and CMU (90.7–93.1 μg m–3) were not significantly different (p > 0.05) and well correlated (r = 0.8), and likely originated from similar source origins. The number of fire hotspots was particularly high during 20–21 March (greater than 200) and, consequently, peaks of PM2.5were recorded at both sites. The most abundant elements at both sampling sites were K (49–50% of total elements), Al (26–31%), Mg (16%) and Zn (4–7%), whereas SO42–(30–38% of total ions), NO3–(13–20%), Na+(16–20%) and NH4+(14–15%) were the most abundant ions. Concentrations of levoglucosan and K+(BB tracers) were well correlated (r = 0.5 for CMU and 0.7 for DAK) confirming that the PM2.5detected in these areas were mainly influenced by BB activity. Principal component analysis (PCA) revealed that BB, road traffic, agricultural activity and soil re-suspension were plausible sources of PM2.5over the study locations. Apart from local sources, the influence of long-range transport was also investigated by way of three-day backward trajectory analysis. 2018-09-05T03:02:24Z 2018-09-05T03:02:24Z 2016-11-01 Journal 20711409 16808584 2-s2.0-85007399054 10.4209/aaqr.2016.03.0105 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85007399054&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/55854 |
institution |
Chiang Mai University |
building |
Chiang Mai University Library |
country |
Thailand |
collection |
CMU Intellectual Repository |
topic |
Environmental Science |
spellingShingle |
Environmental Science Chanakarn Khamkaew Somporn Chantara Rungruang Janta Shantanu Kumar Pani Tippawan Prapamontol Sawaeng Kawichai Wan Wiriya Neng Huei Lin Investigation of biomass burning chemical components over Northern Southeast Asia during 7-SEAS/BASELInE 2014 campaign |
description |
© Taiwan Association for Aerosol Research. This study investigates the chemical components of biomass burning (BB) aerosols obtained from Doi Ang Khang (DAK; near BB source) and Chiang Mai University (CMU; an urban location) over northern Southeast Asia in dry season (March to mid-April) 2014. PM2.5(particulate matter with an aerodynamic diameter less than or equal to 2.5 μm) samples were collected over a 24-h sampling period as a part of the Seven South East Asian Studies (7-SEAS)/BASELInE (BB Aerosols & Stratocumulus Environment: Lifecycles & Interactions Experiment) campaign. The collected aerosols were analyzed for mass concentrations of ions, metals and levoglucosan. The influence of air mass movements on aerosol species was also analyzed. The average PM2.5mass concentrations at DAK (80.8–83.3 μg m–3) and CMU (90.7–93.1 μg m–3) were not significantly different (p > 0.05) and well correlated (r = 0.8), and likely originated from similar source origins. The number of fire hotspots was particularly high during 20–21 March (greater than 200) and, consequently, peaks of PM2.5were recorded at both sites. The most abundant elements at both sampling sites were K (49–50% of total elements), Al (26–31%), Mg (16%) and Zn (4–7%), whereas SO42–(30–38% of total ions), NO3–(13–20%), Na+(16–20%) and NH4+(14–15%) were the most abundant ions. Concentrations of levoglucosan and K+(BB tracers) were well correlated (r = 0.5 for CMU and 0.7 for DAK) confirming that the PM2.5detected in these areas were mainly influenced by BB activity. Principal component analysis (PCA) revealed that BB, road traffic, agricultural activity and soil re-suspension were plausible sources of PM2.5over the study locations. Apart from local sources, the influence of long-range transport was also investigated by way of three-day backward trajectory analysis. |
format |
Journal |
author |
Chanakarn Khamkaew Somporn Chantara Rungruang Janta Shantanu Kumar Pani Tippawan Prapamontol Sawaeng Kawichai Wan Wiriya Neng Huei Lin |
author_facet |
Chanakarn Khamkaew Somporn Chantara Rungruang Janta Shantanu Kumar Pani Tippawan Prapamontol Sawaeng Kawichai Wan Wiriya Neng Huei Lin |
author_sort |
Chanakarn Khamkaew |
title |
Investigation of biomass burning chemical components over Northern Southeast Asia during 7-SEAS/BASELInE 2014 campaign |
title_short |
Investigation of biomass burning chemical components over Northern Southeast Asia during 7-SEAS/BASELInE 2014 campaign |
title_full |
Investigation of biomass burning chemical components over Northern Southeast Asia during 7-SEAS/BASELInE 2014 campaign |
title_fullStr |
Investigation of biomass burning chemical components over Northern Southeast Asia during 7-SEAS/BASELInE 2014 campaign |
title_full_unstemmed |
Investigation of biomass burning chemical components over Northern Southeast Asia during 7-SEAS/BASELInE 2014 campaign |
title_sort |
investigation of biomass burning chemical components over northern southeast asia during 7-seas/baseline 2014 campaign |
publishDate |
2018 |
url |
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85007399054&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/55854 |
_version_ |
1681424583012384768 |