Impact of northern and southern air mass transport on the temporal distribution of atmospheric 210Po and 210Pb in the east coast of Johor, Malaysia

Asnor Azrin Sabuti, Che Abd. Rahim Mohamed

Research output: Contribution to journalArticle

Abstract

Concentration activities of 210Pb and 210Po in the PM10 were determined to discuss their distribution and chemical behavior in relation to meteorological parameters especially in air mass transport during monsoon events. Marine aerosol samples were collected between January 2009 and December 2010 at the coastal region of Mersing, which is located in the southern South China Sea and is about 160 km northeast of Johor Bahru, as part of the atmosphere–ocean interaction program in Malaysia. About 47 PM10 samples were collected using the Sierra-Andersen model 1200 PM10 sampler over a 2-year sampling campaign between January 2009 and December 2010. Samples were processed using acid digestion sequential extraction techniques to analyze various fractions such as Fe and Mn oxides, organic matter, and residual fractions. While, 210Pb and 210Po activities were measured with the Gross Alpha/Beta Counting System model XLB-5 Tennelec® Series 5 and the Alpha Spectrometry (model Alpha Analyst Spectroscopy system with a silicon-surface barrier detector), respectively. The distribution activities of 210Pb and 210Po in the PM10 samples were varied from 162 to 881 μBq/m3 with mean value of 347 ± 170 μBq/m3 and from 85 to 1009 μBq/m3 with mean value of 318 ± 202 μBq/m3, respectively. The analysis showed that 210Po activity in our samples lies in a border and higher range than global distribution values due to contributions from external sources injected to the atmosphere. The speciation of 210Pb and 210Po in marine aerosol corresponds to transboundary haze; e.g., biomass burning especially forest fires and long-range air mass transport of terrestrial dust has enriched concentrations of particle mass in the local atmosphere. The monsoon seems to play an important role in transporting terrestrial dust from Indo-China and northern Asia especially during the northeast monsoon, as well as biogenic pollutants originating from Sumatra and the southern ASEAN region during southwest monsoon events.

Original languageEnglish
Pages (from-to)1-15
Number of pages15
JournalEnvironmental Science and Pollution Research
DOIs
Publication statusAccepted/In press - 11 Jun 2016

Fingerprint

Malaysia
mass transport
Aerosols
Dust
Atmosphere
temporal distribution
air mass
Coastal zones
China
Spectrum Analysis
monsoon
Mass transfer
Northern Asia
Air
Indonesia
coast
Silicon
Oceans and Seas
Biomass
Oxides

Keywords

  • Aerosol
  • Biomass burning
  • Dust
  • Forest
  • Haze
  • Monsoon
  • Natural radionuclide

ASJC Scopus subject areas

  • Environmental Chemistry
  • Health, Toxicology and Mutagenesis
  • Pollution

Cite this

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title = "Impact of northern and southern air mass transport on the temporal distribution of atmospheric 210Po and 210Pb in the east coast of Johor, Malaysia",
abstract = "Concentration activities of 210Pb and 210Po in the PM10 were determined to discuss their distribution and chemical behavior in relation to meteorological parameters especially in air mass transport during monsoon events. Marine aerosol samples were collected between January 2009 and December 2010 at the coastal region of Mersing, which is located in the southern South China Sea and is about 160 km northeast of Johor Bahru, as part of the atmosphere–ocean interaction program in Malaysia. About 47 PM10 samples were collected using the Sierra-Andersen model 1200 PM10 sampler over a 2-year sampling campaign between January 2009 and December 2010. Samples were processed using acid digestion sequential extraction techniques to analyze various fractions such as Fe and Mn oxides, organic matter, and residual fractions. While, 210Pb and 210Po activities were measured with the Gross Alpha/Beta Counting System model XLB-5 Tennelec{\circledR} Series 5 and the Alpha Spectrometry (model Alpha Analyst Spectroscopy system with a silicon-surface barrier detector), respectively. The distribution activities of 210Pb and 210Po in the PM10 samples were varied from 162 to 881 μBq/m3 with mean value of 347 ± 170 μBq/m3 and from 85 to 1009 μBq/m3 with mean value of 318 ± 202 μBq/m3, respectively. The analysis showed that 210Po activity in our samples lies in a border and higher range than global distribution values due to contributions from external sources injected to the atmosphere. The speciation of 210Pb and 210Po in marine aerosol corresponds to transboundary haze; e.g., biomass burning especially forest fires and long-range air mass transport of terrestrial dust has enriched concentrations of particle mass in the local atmosphere. The monsoon seems to play an important role in transporting terrestrial dust from Indo-China and northern Asia especially during the northeast monsoon, as well as biogenic pollutants originating from Sumatra and the southern ASEAN region during southwest monsoon events.",
keywords = "Aerosol, Biomass burning, Dust, Forest, Haze, Monsoon, Natural radionuclide",
author = "Sabuti, {Asnor Azrin} and Mohamed, {Che Abd. Rahim}",
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AU - Sabuti, Asnor Azrin

AU - Mohamed, Che Abd. Rahim

PY - 2016/6/11

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N2 - Concentration activities of 210Pb and 210Po in the PM10 were determined to discuss their distribution and chemical behavior in relation to meteorological parameters especially in air mass transport during monsoon events. Marine aerosol samples were collected between January 2009 and December 2010 at the coastal region of Mersing, which is located in the southern South China Sea and is about 160 km northeast of Johor Bahru, as part of the atmosphere–ocean interaction program in Malaysia. About 47 PM10 samples were collected using the Sierra-Andersen model 1200 PM10 sampler over a 2-year sampling campaign between January 2009 and December 2010. Samples were processed using acid digestion sequential extraction techniques to analyze various fractions such as Fe and Mn oxides, organic matter, and residual fractions. While, 210Pb and 210Po activities were measured with the Gross Alpha/Beta Counting System model XLB-5 Tennelec® Series 5 and the Alpha Spectrometry (model Alpha Analyst Spectroscopy system with a silicon-surface barrier detector), respectively. The distribution activities of 210Pb and 210Po in the PM10 samples were varied from 162 to 881 μBq/m3 with mean value of 347 ± 170 μBq/m3 and from 85 to 1009 μBq/m3 with mean value of 318 ± 202 μBq/m3, respectively. The analysis showed that 210Po activity in our samples lies in a border and higher range than global distribution values due to contributions from external sources injected to the atmosphere. The speciation of 210Pb and 210Po in marine aerosol corresponds to transboundary haze; e.g., biomass burning especially forest fires and long-range air mass transport of terrestrial dust has enriched concentrations of particle mass in the local atmosphere. The monsoon seems to play an important role in transporting terrestrial dust from Indo-China and northern Asia especially during the northeast monsoon, as well as biogenic pollutants originating from Sumatra and the southern ASEAN region during southwest monsoon events.

AB - Concentration activities of 210Pb and 210Po in the PM10 were determined to discuss their distribution and chemical behavior in relation to meteorological parameters especially in air mass transport during monsoon events. Marine aerosol samples were collected between January 2009 and December 2010 at the coastal region of Mersing, which is located in the southern South China Sea and is about 160 km northeast of Johor Bahru, as part of the atmosphere–ocean interaction program in Malaysia. About 47 PM10 samples were collected using the Sierra-Andersen model 1200 PM10 sampler over a 2-year sampling campaign between January 2009 and December 2010. Samples were processed using acid digestion sequential extraction techniques to analyze various fractions such as Fe and Mn oxides, organic matter, and residual fractions. While, 210Pb and 210Po activities were measured with the Gross Alpha/Beta Counting System model XLB-5 Tennelec® Series 5 and the Alpha Spectrometry (model Alpha Analyst Spectroscopy system with a silicon-surface barrier detector), respectively. The distribution activities of 210Pb and 210Po in the PM10 samples were varied from 162 to 881 μBq/m3 with mean value of 347 ± 170 μBq/m3 and from 85 to 1009 μBq/m3 with mean value of 318 ± 202 μBq/m3, respectively. The analysis showed that 210Po activity in our samples lies in a border and higher range than global distribution values due to contributions from external sources injected to the atmosphere. The speciation of 210Pb and 210Po in marine aerosol corresponds to transboundary haze; e.g., biomass burning especially forest fires and long-range air mass transport of terrestrial dust has enriched concentrations of particle mass in the local atmosphere. The monsoon seems to play an important role in transporting terrestrial dust from Indo-China and northern Asia especially during the northeast monsoon, as well as biogenic pollutants originating from Sumatra and the southern ASEAN region during southwest monsoon events.

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KW - Haze

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