Tracer experiments on the behavior of radioiodine in the soil-plant-atmosphere system

Muramatsu, Yasuyuki; Yoshida, Satoshi; Ban-Nai, Tadaaki

doi:10.1007/bf02038428

Cited by 42 publications

(20 citation statements)

References 10 publications

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“…It has been observed that the Eh of soils in flooded rice paddies drops to ≤ 200 mV and that iodine is desorbed from soil to the solution phase as iodide under these conditions (Muramatsu, 1989). It was subsequently shown that high iodine desorption occurs in soils at or below a soil Eh of -100 mV (Muramatsu et al, 1996).…”

Section: Influence Of Redox Conditions On Alkyl Iodine Formationmentioning

confidence: 99%

Biogeochemical Considerations Related To The Remediation Of I-129 Plumes

Kaplan

Yeager

Denham

et al. 2012

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Section: Influence Of Redox Conditions On Alkyl Iodine Formationmentioning

confidence: 99%

Biogeochemical Considerations Related To The Remediation Of I-129 Plumes

Kaplan

Yeager

Denham

et al. 2012

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“…Young seedlings (or seeds) were planted in the pots (3 litre) with spiked soil. They were cultivated in a plant growth chamber (3,4]. Maximum light intensity of the chamber was about 70000 lux.…”

Section: Transfer Of Iodine From Soil To Plantsmentioning

confidence: 99%

“…[3][4][5][6][7][8][9][10] on (1) transfer of iodine from soil to plants; (2) sorption and desorption phenomena of iodine in soil; (3) volatilization of iodine from the soil-plant system; and (4) production of methyl iodide by bacterial activities. Some new data are also included.…”

Section: Introductionmentioning

confidence: 99%

Behavior of iodine in the soil-plant system

Muramatsu¹,

Yoshida²,

Ban-Nai³

et al. 2002

Radioprotection

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In order to understand the behaviour of radioactive and stable iodine in the environment, we have carried out radiotracer experiments and chemical analyses in the soil-plant systems. Parameters important for the assessment of radioiodine movement from the environment to man, e.g. soil-plant transfer factors for various agricultural crops and soil-solution distribution coefficient for different soils, were obtained. Mechanisms of iodine sorption and desorption on soil were also studied. Microorganisms and/or their products (e.g. enzymes) were found to play an important role in the fixation of iodine on soil. Iodine was observed to be desorbed from the flooded soils due to the reducing conditions (low Eh) created by the microbial activities. From the soil-rice plant system biogenesis methyl iodide was found to be evaporated into the atmosphere. Through experiment using 1Z3 I tracer, we found that volatile organic iodine was produced due to microbial activities (including bacterial activities).

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“…These values do not correspond to the highest iodine concentrations in soil. Muramatsu et al (1995) have shown that the soil-to-plant transfer factor for iodine in rice is very low compared to green leafy vegetables and that iodine in soil can be volatilized off as organic/methyl iodine as a result of rice cultivation. In addition, the atmosphere is an important source of iodine in plants and atmospheric adsorption rather than soil -root uptake may contribute to rice iodine concentrations.…”

Section: Ricementioning

confidence: 99%

Selenium and iodine in soil, rice and drinking water in relation to endemic goitre in Sri Lanka

Fordyce

Johnson

Navaratna

et al. 2000

Science of The Total Environment

109

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Endemic goitre has been reported in the climatic Wet Zone of south-west Sri Lanka for the past 50 years, but rarely occurs in the northern Dry Zone. Despite government sponsored iodised salt programmes, endemic goitre is still prevalent. In recent years, it has been suggested that Se deficiency may be an important factor in the onset of goitre and other iodine deficiency disorders (IDD). Prior to the present study,

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Tracer experiments on the behavior of radioiodine in the soil-plant-atmosphere system

Cited by 42 publications

References 10 publications

Biogeochemical Considerations Related To The Remediation Of I-129 Plumes

Biogeochemical Considerations Related To The Remediation Of I-129 Plumes

Behavior of iodine in the soil-plant system

Selenium and iodine in soil, rice and drinking water in relation to endemic goitre in Sri Lanka

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