Speciation analysis for 129I and 127I in air and its tracer application in geochemcial cycle of stable iodine

Xiaolin Hou; Ala Aldahan; Göran Possnert

Abstract

A method for the collection and separation of different species of iodine in air was developed. Particle associa.ted iodine, inorganic gaseous iodine and organic gaseous iodine were collected by
pumping the air through air sampler with sequential air filters, a glass fibre filter, cellulous filter impregnated in NaOH/glycerol and a active charcoal column impregnated with TEDA. The collected different species of iodine were then separated by a combustion method and trapped in an alkali solution. ¹²⁷I in the trap solution is measured by ICP-MS. Iodine remained solution was further separated by solvent extraction and AgI precipitation for AMS measurement of ¹²⁹I.
Total 45 air samples at 8 locations with different distance to the North Sea (0, 5, 50, 100, 250, 500, 1000 km) in Denmark, Sweden, and Lithuania have been collected in March and September 2007, meanwhile lichen, pine needle, surface water, and rain water samples have also been collected near the air sampling sites. Iodine in 25 lichen and pine needle samples has been separated using the combustion furnace. The results show a high ¹²⁹I/¹²⁹I ratio in air sample as well as lichen samples in the short distance to the North Sea, especially those collected in a 10 km distance to the North Sea. The lowest value was observed in the Lithuania, where is 1000 km far from the North Sea. The application of anthropogenic ¹²⁹I released from reprocessing plant for geochemical cycle is discussed in this work.

Original language	English
Publication date	2011
Publication status	Published - 2011
Event	12th International Conference on Accelerator Mass Spectrometry - Wellington, New Zealand Duration: 20 Mar 2011 → 25 Mar 2011 http://www.gns.cri.nz/ams12/

Conference

Conference	12th International Conference on Accelerator Mass Spectrometry
Country/Territory	New Zealand
City	Wellington
Period	20/03/2011 → 25/03/2011
Internet address	http://www.gns.cri.nz/ams12/

Keywords

Radio ecology and tracers

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Cite this

@conference{3c539a0315a743dcbefc3a34f36de219,

title = "Speciation analysis for 129I and 127I in air and its tracer application in geochemcial cycle of stable iodine",

abstract = "A method for the collection and separation of different species of iodine in air was developed. Particle associa.ted iodine, inorganic gaseous iodine and organic gaseous iodine were collected by pumping the air through air sampler with sequential air filters, a glass fibre filter, cellulous filter impregnated in NaOH/glycerol and a active charcoal column impregnated with TEDA. The collected different species of iodine were then separated by a combustion method and trapped in an alkali solution. 127I in the trap solution is measured by ICP-MS. Iodine remained solution was further separated by solvent extraction and AgI precipitation for AMS measurement of 129I. Total 45 air samples at 8 locations with different distance to the North Sea (0, 5, 50, 100, 250, 500, 1000 km) in Denmark, Sweden, and Lithuania have been collected in March and September 2007, meanwhile lichen, pine needle, surface water, and rain water samples have also been collected near the air sampling sites. Iodine in 25 lichen and pine needle samples has been separated using the combustion furnace. The results show a high 129I/129I ratio in air sample as well as lichen samples in the short distance to the North Sea, especially those collected in a 10 km distance to the North Sea. The lowest value was observed in the Lithuania, where is 1000 km far from the North Sea. The application of anthropogenic 129I released from reprocessing plant for geochemical cycle is discussed in this work.",

keywords = "Radio ecology and tracers, Radio{\o}kologi og sporstoffer",

author = "Xiaolin Hou and Ala Aldahan and G{\"o}ran Possnert",

year = "2011",

language = "English",

note = "12th International Conference on Accelerator Mass Spectrometry, AMS-12 ; Conference date: 20-03-2011 Through 25-03-2011",

url = "http://www.gns.cri.nz/ams12/",

}

Speciation analysis for 129I and 127I in air and its tracer application in geochemcial cycle of stable iodine. / Hou, Xiaolin (Invited author); Aldahan, Ala (Invited author); Possnert, Göran (Invited author).
2011. Abstract from 12th International Conference on Accelerator Mass Spectrometry, Wellington, New Zealand.

Research output: Contribution to conference › Conference abstract for conference › Research

TY - ABST

T1 - Speciation analysis for 129I and 127I in air and its tracer application in geochemcial cycle of stable iodine

AU - Hou, Xiaolin

AU - Aldahan, Ala

AU - Possnert, Göran

PY - 2011

Y1 - 2011

N2 - A method for the collection and separation of different species of iodine in air was developed. Particle associa.ted iodine, inorganic gaseous iodine and organic gaseous iodine were collected by pumping the air through air sampler with sequential air filters, a glass fibre filter, cellulous filter impregnated in NaOH/glycerol and a active charcoal column impregnated with TEDA. The collected different species of iodine were then separated by a combustion method and trapped in an alkali solution. 127I in the trap solution is measured by ICP-MS. Iodine remained solution was further separated by solvent extraction and AgI precipitation for AMS measurement of 129I. Total 45 air samples at 8 locations with different distance to the North Sea (0, 5, 50, 100, 250, 500, 1000 km) in Denmark, Sweden, and Lithuania have been collected in March and September 2007, meanwhile lichen, pine needle, surface water, and rain water samples have also been collected near the air sampling sites. Iodine in 25 lichen and pine needle samples has been separated using the combustion furnace. The results show a high 129I/129I ratio in air sample as well as lichen samples in the short distance to the North Sea, especially those collected in a 10 km distance to the North Sea. The lowest value was observed in the Lithuania, where is 1000 km far from the North Sea. The application of anthropogenic 129I released from reprocessing plant for geochemical cycle is discussed in this work.

AB - A method for the collection and separation of different species of iodine in air was developed. Particle associa.ted iodine, inorganic gaseous iodine and organic gaseous iodine were collected by pumping the air through air sampler with sequential air filters, a glass fibre filter, cellulous filter impregnated in NaOH/glycerol and a active charcoal column impregnated with TEDA. The collected different species of iodine were then separated by a combustion method and trapped in an alkali solution. 127I in the trap solution is measured by ICP-MS. Iodine remained solution was further separated by solvent extraction and AgI precipitation for AMS measurement of 129I. Total 45 air samples at 8 locations with different distance to the North Sea (0, 5, 50, 100, 250, 500, 1000 km) in Denmark, Sweden, and Lithuania have been collected in March and September 2007, meanwhile lichen, pine needle, surface water, and rain water samples have also been collected near the air sampling sites. Iodine in 25 lichen and pine needle samples has been separated using the combustion furnace. The results show a high 129I/129I ratio in air sample as well as lichen samples in the short distance to the North Sea, especially those collected in a 10 km distance to the North Sea. The lowest value was observed in the Lithuania, where is 1000 km far from the North Sea. The application of anthropogenic 129I released from reprocessing plant for geochemical cycle is discussed in this work.

KW - Radio ecology and tracers

KW - Radioøkologi og sporstoffer

M3 - Conference abstract for conference

T2 - 12th International Conference on Accelerator Mass Spectrometry

Y2 - 20 March 2011 through 25 March 2011