Long-term observation of trace metal concentration in aerosols at a remote island, Rishiri, Japan by using inductively coupled plasma mass spectrometry equipped with laser ablation

Tomoaki Okuda, Masaki Tenmoku, Jun Kato, Junya Mori, Taishi Sato, Ryo Yokochi, Shigeru Tanaka

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Aerosol samples were continuously collected at Rishiri Island, Japan and concentrations of trace metals and water-soluble ionic constituents in the aerosol samples were measured in this study. Trace metal concentrations were analyzed by using inductively coupled plasma mass spectrometry equipped with a laser ablation sample introduction (LA/ICP-MS), which is a rapid and simultaneous method for multi-element analysis. The average concentrations of trace metals and water-soluble ionic constituents in TSP at Rishiri Island from March 2001 to October 2003 were: Al: 251 ± 371 (n= 359), Ti: 27 ± 38 (n= 342), V: 1.3 ± 1.6 (n= 327), Cr: 2.0 ± 2.2 (n= 202), Mn: 8.6 ± 12.0 (n= 353), Fe: 356 ± 645 (n= 349), Co: 0.18 ± 0.25 (n= 250), Ni: 1.9 ± 3.4 (n= 232), Cu: 7.4 ± 10.2 (n= 123), Zn: 16 ± 20 (n= 242), As: 1.2 ± 2.1 (n= 312), Se: 0.49 ± 0.65 (n= 133), Cd: 0.19 ± 0.33 (n= 285), Sb: 0.46 ± 0.62 (n= 265), Pb: 16 ± 30 (n= 314), Na+: 1153 ± 1384 (n= 306), NH4 +: 247 ± 257 (n= 254), K+: 74 ± 63 (n= 284), Ca2+: 144 ± 174 (n= 294), Mg 2+: 150 ± 161 (n= 293), Cl-: 2703 ± 3151 (n= 180), NO3 -: 339 ± 415 (n= 332), SO4 2-: 1648 ± 1398 (n= 362) (unit: ng m-3). The obtained trace metal concentration levels in the aerosol were 1/10-1/70 of those obtained at Beijing, China and 1/2-1/40 of those obtained at Tokyo, Japan. The correlation between Al, Ti, Mn, and Fe, which were derived mainly from soil dust, was high at Rishiri Island. High-concentration events (when the measured value exceeds the average +3σ for the entire observation period) for each chemical constituent were observed several times per year, although the chemical concentration levels in TSP at Rishiri Island were almost constant throughout the year. The high-concentration phenomenon, which occurred in only 2% of the measurement days, raised the average concentration of the atmospheric chemical constituents at Rishiri Island by about 10%. The average value of the Pb/Zn ratio at Rishiri Island during the entire period was 1.8 ± 2.9, which is higher than 1. This suggests that the atmosphere at Rishiri Island has constantly been receiving contaminants from the Asian Continent. We conclude that the chemical constituents in the aerosol at Rishiri Island have been regularly transported from a wide area across the Asian Continent.

Original languageEnglish
Pages (from-to)3-17
Number of pages15
JournalWater, Air, and Soil Pollution
Volume174
Issue number1-4
DOIs
Publication statusPublished - 2006 Jul

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Inductively coupled plasma mass spectrometry
Laser ablation
Aerosols
ablation
trace metal
mass spectrometry
laser
aerosol
plasma
Water
Dust
Impurities
Soils
Trace metals
dust
water
chemical
pollutant
atmosphere

Keywords

  • Aerosol
  • Back trajectory
  • East Asia
  • Inductively coupled plasma mass spectrometry equipped with laser ablation (LA/ICP-MS)
  • Ionic constituents
  • Trace metals

ASJC Scopus subject areas

  • Atmospheric Science
  • Pollution
  • Environmental Science(all)
  • Environmental Chemistry
  • Water Science and Technology
  • Earth-Surface Processes

Cite this

Long-term observation of trace metal concentration in aerosols at a remote island, Rishiri, Japan by using inductively coupled plasma mass spectrometry equipped with laser ablation. / Okuda, Tomoaki; Tenmoku, Masaki; Kato, Jun; Mori, Junya; Sato, Taishi; Yokochi, Ryo; Tanaka, Shigeru.

In: Water, Air, and Soil Pollution, Vol. 174, No. 1-4, 07.2006, p. 3-17.

Research output: Contribution to journalArticle

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abstract = "Aerosol samples were continuously collected at Rishiri Island, Japan and concentrations of trace metals and water-soluble ionic constituents in the aerosol samples were measured in this study. Trace metal concentrations were analyzed by using inductively coupled plasma mass spectrometry equipped with a laser ablation sample introduction (LA/ICP-MS), which is a rapid and simultaneous method for multi-element analysis. The average concentrations of trace metals and water-soluble ionic constituents in TSP at Rishiri Island from March 2001 to October 2003 were: Al: 251 ± 371 (n= 359), Ti: 27 ± 38 (n= 342), V: 1.3 ± 1.6 (n= 327), Cr: 2.0 ± 2.2 (n= 202), Mn: 8.6 ± 12.0 (n= 353), Fe: 356 ± 645 (n= 349), Co: 0.18 ± 0.25 (n= 250), Ni: 1.9 ± 3.4 (n= 232), Cu: 7.4 ± 10.2 (n= 123), Zn: 16 ± 20 (n= 242), As: 1.2 ± 2.1 (n= 312), Se: 0.49 ± 0.65 (n= 133), Cd: 0.19 ± 0.33 (n= 285), Sb: 0.46 ± 0.62 (n= 265), Pb: 16 ± 30 (n= 314), Na+: 1153 ± 1384 (n= 306), NH4 +: 247 ± 257 (n= 254), K+: 74 ± 63 (n= 284), Ca2+: 144 ± 174 (n= 294), Mg 2+: 150 ± 161 (n= 293), Cl-: 2703 ± 3151 (n= 180), NO3 -: 339 ± 415 (n= 332), SO4 2-: 1648 ± 1398 (n= 362) (unit: ng m-3). The obtained trace metal concentration levels in the aerosol were 1/10-1/70 of those obtained at Beijing, China and 1/2-1/40 of those obtained at Tokyo, Japan. The correlation between Al, Ti, Mn, and Fe, which were derived mainly from soil dust, was high at Rishiri Island. High-concentration events (when the measured value exceeds the average +3σ for the entire observation period) for each chemical constituent were observed several times per year, although the chemical concentration levels in TSP at Rishiri Island were almost constant throughout the year. The high-concentration phenomenon, which occurred in only 2{\%} of the measurement days, raised the average concentration of the atmospheric chemical constituents at Rishiri Island by about 10{\%}. The average value of the Pb/Zn ratio at Rishiri Island during the entire period was 1.8 ± 2.9, which is higher than 1. This suggests that the atmosphere at Rishiri Island has constantly been receiving contaminants from the Asian Continent. We conclude that the chemical constituents in the aerosol at Rishiri Island have been regularly transported from a wide area across the Asian Continent.",
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T1 - Long-term observation of trace metal concentration in aerosols at a remote island, Rishiri, Japan by using inductively coupled plasma mass spectrometry equipped with laser ablation

AU - Okuda, Tomoaki

AU - Tenmoku, Masaki

AU - Kato, Jun

AU - Mori, Junya

AU - Sato, Taishi

AU - Yokochi, Ryo

AU - Tanaka, Shigeru

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N2 - Aerosol samples were continuously collected at Rishiri Island, Japan and concentrations of trace metals and water-soluble ionic constituents in the aerosol samples were measured in this study. Trace metal concentrations were analyzed by using inductively coupled plasma mass spectrometry equipped with a laser ablation sample introduction (LA/ICP-MS), which is a rapid and simultaneous method for multi-element analysis. The average concentrations of trace metals and water-soluble ionic constituents in TSP at Rishiri Island from March 2001 to October 2003 were: Al: 251 ± 371 (n= 359), Ti: 27 ± 38 (n= 342), V: 1.3 ± 1.6 (n= 327), Cr: 2.0 ± 2.2 (n= 202), Mn: 8.6 ± 12.0 (n= 353), Fe: 356 ± 645 (n= 349), Co: 0.18 ± 0.25 (n= 250), Ni: 1.9 ± 3.4 (n= 232), Cu: 7.4 ± 10.2 (n= 123), Zn: 16 ± 20 (n= 242), As: 1.2 ± 2.1 (n= 312), Se: 0.49 ± 0.65 (n= 133), Cd: 0.19 ± 0.33 (n= 285), Sb: 0.46 ± 0.62 (n= 265), Pb: 16 ± 30 (n= 314), Na+: 1153 ± 1384 (n= 306), NH4 +: 247 ± 257 (n= 254), K+: 74 ± 63 (n= 284), Ca2+: 144 ± 174 (n= 294), Mg 2+: 150 ± 161 (n= 293), Cl-: 2703 ± 3151 (n= 180), NO3 -: 339 ± 415 (n= 332), SO4 2-: 1648 ± 1398 (n= 362) (unit: ng m-3). The obtained trace metal concentration levels in the aerosol were 1/10-1/70 of those obtained at Beijing, China and 1/2-1/40 of those obtained at Tokyo, Japan. The correlation between Al, Ti, Mn, and Fe, which were derived mainly from soil dust, was high at Rishiri Island. High-concentration events (when the measured value exceeds the average +3σ for the entire observation period) for each chemical constituent were observed several times per year, although the chemical concentration levels in TSP at Rishiri Island were almost constant throughout the year. The high-concentration phenomenon, which occurred in only 2% of the measurement days, raised the average concentration of the atmospheric chemical constituents at Rishiri Island by about 10%. The average value of the Pb/Zn ratio at Rishiri Island during the entire period was 1.8 ± 2.9, which is higher than 1. This suggests that the atmosphere at Rishiri Island has constantly been receiving contaminants from the Asian Continent. We conclude that the chemical constituents in the aerosol at Rishiri Island have been regularly transported from a wide area across the Asian Continent.

AB - Aerosol samples were continuously collected at Rishiri Island, Japan and concentrations of trace metals and water-soluble ionic constituents in the aerosol samples were measured in this study. Trace metal concentrations were analyzed by using inductively coupled plasma mass spectrometry equipped with a laser ablation sample introduction (LA/ICP-MS), which is a rapid and simultaneous method for multi-element analysis. The average concentrations of trace metals and water-soluble ionic constituents in TSP at Rishiri Island from March 2001 to October 2003 were: Al: 251 ± 371 (n= 359), Ti: 27 ± 38 (n= 342), V: 1.3 ± 1.6 (n= 327), Cr: 2.0 ± 2.2 (n= 202), Mn: 8.6 ± 12.0 (n= 353), Fe: 356 ± 645 (n= 349), Co: 0.18 ± 0.25 (n= 250), Ni: 1.9 ± 3.4 (n= 232), Cu: 7.4 ± 10.2 (n= 123), Zn: 16 ± 20 (n= 242), As: 1.2 ± 2.1 (n= 312), Se: 0.49 ± 0.65 (n= 133), Cd: 0.19 ± 0.33 (n= 285), Sb: 0.46 ± 0.62 (n= 265), Pb: 16 ± 30 (n= 314), Na+: 1153 ± 1384 (n= 306), NH4 +: 247 ± 257 (n= 254), K+: 74 ± 63 (n= 284), Ca2+: 144 ± 174 (n= 294), Mg 2+: 150 ± 161 (n= 293), Cl-: 2703 ± 3151 (n= 180), NO3 -: 339 ± 415 (n= 332), SO4 2-: 1648 ± 1398 (n= 362) (unit: ng m-3). The obtained trace metal concentration levels in the aerosol were 1/10-1/70 of those obtained at Beijing, China and 1/2-1/40 of those obtained at Tokyo, Japan. The correlation between Al, Ti, Mn, and Fe, which were derived mainly from soil dust, was high at Rishiri Island. High-concentration events (when the measured value exceeds the average +3σ for the entire observation period) for each chemical constituent were observed several times per year, although the chemical concentration levels in TSP at Rishiri Island were almost constant throughout the year. The high-concentration phenomenon, which occurred in only 2% of the measurement days, raised the average concentration of the atmospheric chemical constituents at Rishiri Island by about 10%. The average value of the Pb/Zn ratio at Rishiri Island during the entire period was 1.8 ± 2.9, which is higher than 1. This suggests that the atmosphere at Rishiri Island has constantly been receiving contaminants from the Asian Continent. We conclude that the chemical constituents in the aerosol at Rishiri Island have been regularly transported from a wide area across the Asian Continent.

KW - Aerosol

KW - Back trajectory

KW - East Asia

KW - Inductively coupled plasma mass spectrometry equipped with laser ablation (LA/ICP-MS)

KW - Ionic constituents

KW - Trace metals

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