Biogenic iodine emissions and identification of end-products in coastal ultrafine particles during nucleation bursts

J. M. Mäkelä, T. Hoffmann, C. Holzke, M. Väkevä, T. Suni, T. Mattila, P. P. Aalto, Unto Tapper, Esko I. Kauppinen, C. D. O'Dowd

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Abstract

Ultrafine particles sampled during new particle formation bursts observed in the coastal zone were studied with transmission electron microscopy (TEM) and elemental analysis using energy‐dispersive X ray (EDX).
It was observed that both iodine and sulphur were present in the new particles with diameter below 10 mn.
Gaseous emissions of halogen compounds from seaweeds were also measured at the same location during low‐tide particle nucleation episodes.
Based on the presence of iodine in the particle phase during low‐tide nucleation bursts, and the significant emission of iodine compounds from the seaweeds during these periods, it is apparent that part of the biogenic iodine species emitted from the seaweeds end up in the ultrafine particulate phase. It was not possible to quantitatively determine the iodine content in the particles; however, in most cases the relative contribution from iodine and sulphate was similar, while some cases indicated no sulphate.
On larger sized particles the contribution of sulphate was significantly higher than iodine. It appears that the condensable species leading to the appearance of new particles in the coastal atmosphere is an iodine species.
Whether or not this iodine species also participates in the nucleation of new stable clusters could not be completely verified.
Original languageEnglish
Pages (from-to)PAR 14-1-PAR 14-14
JournalJournal of Geophysical Research
Volume107
Issue numberD19
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

Fingerprint

iodine
Iodine
nucleation
bursts
Nucleation
seaweeds
products
Seaweed
seaweed
Sulfates
sulfates
macroalgae
sulfate
Iodine Compounds
Halogen compounds
iodine compounds
halogen compounds
Ultrafine
product
particle

Keywords

  • nanoparticles
  • transmission electron microscopy
  • iodine
  • coastal atmosphere

Cite this

Mäkelä, J. M., Hoffmann, T., Holzke, C., Väkevä, M., Suni, T., Mattila, T., ... O'Dowd, C. D. (2002). Biogenic iodine emissions and identification of end-products in coastal ultrafine particles during nucleation bursts. Journal of Geophysical Research, 107(D19), PAR 14-1-PAR 14-14. https://doi.org/10.1029/2001JD000580
Mäkelä, J. M. ; Hoffmann, T. ; Holzke, C. ; Väkevä, M. ; Suni, T. ; Mattila, T. ; Aalto, P. P. ; Tapper, Unto ; Kauppinen, Esko I. ; O'Dowd, C. D. / Biogenic iodine emissions and identification of end-products in coastal ultrafine particles during nucleation bursts. In: Journal of Geophysical Research. 2002 ; Vol. 107, No. D19. pp. PAR 14-1-PAR 14-14.
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abstract = "Ultrafine particles sampled during new particle formation bursts observed in the coastal zone were studied with transmission electron microscopy (TEM) and elemental analysis using energy‐dispersive X ray (EDX). It was observed that both iodine and sulphur were present in the new particles with diameter below 10 mn. Gaseous emissions of halogen compounds from seaweeds were also measured at the same location during low‐tide particle nucleation episodes. Based on the presence of iodine in the particle phase during low‐tide nucleation bursts, and the significant emission of iodine compounds from the seaweeds during these periods, it is apparent that part of the biogenic iodine species emitted from the seaweeds end up in the ultrafine particulate phase. It was not possible to quantitatively determine the iodine content in the particles; however, in most cases the relative contribution from iodine and sulphate was similar, while some cases indicated no sulphate. On larger sized particles the contribution of sulphate was significantly higher than iodine. It appears that the condensable species leading to the appearance of new particles in the coastal atmosphere is an iodine species. Whether or not this iodine species also participates in the nucleation of new stable clusters could not be completely verified.",
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author = "M{\"a}kel{\"a}, {J. M.} and T. Hoffmann and C. Holzke and M. V{\"a}kev{\"a} and T. Suni and T. Mattila and Aalto, {P. P.} and Unto Tapper and Kauppinen, {Esko I.} and O'Dowd, {C. D.}",
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Mäkelä, JM, Hoffmann, T, Holzke, C, Väkevä, M, Suni, T, Mattila, T, Aalto, PP, Tapper, U, Kauppinen, EI & O'Dowd, CD 2002, 'Biogenic iodine emissions and identification of end-products in coastal ultrafine particles during nucleation bursts', Journal of Geophysical Research, vol. 107, no. D19, pp. PAR 14-1-PAR 14-14. https://doi.org/10.1029/2001JD000580

Biogenic iodine emissions and identification of end-products in coastal ultrafine particles during nucleation bursts. / Mäkelä, J. M.; Hoffmann, T.; Holzke, C.; Väkevä, M.; Suni, T.; Mattila, T.; Aalto, P. P.; Tapper, Unto; Kauppinen, Esko I.; O'Dowd, C. D.

In: Journal of Geophysical Research, Vol. 107, No. D19, 2002, p. PAR 14-1-PAR 14-14.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Biogenic iodine emissions and identification of end-products in coastal ultrafine particles during nucleation bursts

AU - Mäkelä, J. M.

AU - Hoffmann, T.

AU - Holzke, C.

AU - Väkevä, M.

AU - Suni, T.

AU - Mattila, T.

AU - Aalto, P. P.

AU - Tapper, Unto

AU - Kauppinen, Esko I.

AU - O'Dowd, C. D.

PY - 2002

Y1 - 2002

N2 - Ultrafine particles sampled during new particle formation bursts observed in the coastal zone were studied with transmission electron microscopy (TEM) and elemental analysis using energy‐dispersive X ray (EDX). It was observed that both iodine and sulphur were present in the new particles with diameter below 10 mn. Gaseous emissions of halogen compounds from seaweeds were also measured at the same location during low‐tide particle nucleation episodes. Based on the presence of iodine in the particle phase during low‐tide nucleation bursts, and the significant emission of iodine compounds from the seaweeds during these periods, it is apparent that part of the biogenic iodine species emitted from the seaweeds end up in the ultrafine particulate phase. It was not possible to quantitatively determine the iodine content in the particles; however, in most cases the relative contribution from iodine and sulphate was similar, while some cases indicated no sulphate. On larger sized particles the contribution of sulphate was significantly higher than iodine. It appears that the condensable species leading to the appearance of new particles in the coastal atmosphere is an iodine species. Whether or not this iodine species also participates in the nucleation of new stable clusters could not be completely verified.

AB - Ultrafine particles sampled during new particle formation bursts observed in the coastal zone were studied with transmission electron microscopy (TEM) and elemental analysis using energy‐dispersive X ray (EDX). It was observed that both iodine and sulphur were present in the new particles with diameter below 10 mn. Gaseous emissions of halogen compounds from seaweeds were also measured at the same location during low‐tide particle nucleation episodes. Based on the presence of iodine in the particle phase during low‐tide nucleation bursts, and the significant emission of iodine compounds from the seaweeds during these periods, it is apparent that part of the biogenic iodine species emitted from the seaweeds end up in the ultrafine particulate phase. It was not possible to quantitatively determine the iodine content in the particles; however, in most cases the relative contribution from iodine and sulphate was similar, while some cases indicated no sulphate. On larger sized particles the contribution of sulphate was significantly higher than iodine. It appears that the condensable species leading to the appearance of new particles in the coastal atmosphere is an iodine species. Whether or not this iodine species also participates in the nucleation of new stable clusters could not be completely verified.

KW - nanoparticles

KW - transmission electron microscopy

KW - iodine

KW - coastal atmosphere

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U2 - 10.1029/2001JD000580

DO - 10.1029/2001JD000580

M3 - Article

VL - 107

SP - PAR 14-1-PAR 14-14

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

SN - 0148-0227

IS - D19

ER -