Analysis of 129I in lichens by accelerator mass spectrometry through a microwave-based sample preparation method

Gómez-Guzmán, J.M.; López-Gutiérrez, J. M.; Pinto, A. M. G.; Holm, E.; Garcı́a-León, Manuel

doi:10.1016/j.nimb.2009.10.126

Cited by 13 publications

(4 citation statements)

References 12 publications

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“…A significant positive correlation ( r = 0.741, p = 0.002) was found between 129 I and 127 I in mosses and lichens, indicating that both 129 I and 127 I were assimilated from the air (Figure S2). This is consistent with our hypothesis that 129 I in moss and lichen is indicative of atmospheric levels of radioactive 129 I, − while it is not clear where and how 129 I in the STP comes from.…”

Section: Resultssupporting

confidence: 86%

“…Bioindicators are excellent for evaluating contaminants in vast and remote areas. Because of the unique surface absorption properties of water and mineral nutrients, mosses and lichens are most sensitive to air pollutants and thus act as excellent bioindicators for investigating deposition and contamination of heavy metals (such as lead and antimony), persistent organic pollutants, radionuclides ( 55 Fe, 63 Ni, 60 Co), and other substances. − Mosses and lichens also readily absorb 129 I from the atmosphere, allowing them to indicate atmospheric 129 I levels. − Mushrooms have high soil–mushroom transfer coefficients and are employed to study the radioactive pollution of soil layers and health effects. , …”

Section: Introductionmentioning

confidence: 99%

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Long-Range Transboundary Transport of Iodine-129 from South Asia to the Southern Tibetan Plateau Revealed by Moss and Lichen

Zhang,

Cheng,

Hou

et al. 2024

Environ. Sci. Technol. Lett.

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Level and transport regime of radioactive pollutants are scarcely understood at the remote high-altitude Tibetan Plateau (TP), which is the wellknown third pole. Radioactive 129 I is a major fission product, highly volatile, spreads globally and is, therefore, a perfect tracer of human nuclear contamination. Atmospheric levels of 129 I were investigated by mosses and lichens from the southern Tibetan Plateau (STP). 129 I levels of (203 ± 274) × 10 6 atoms/g and (175 ± 142) × 10 −10 for 129 I/ 127 I atomic ratios were first presented in the STP, considerably greater than the prenuclear level, but 2−4 orders of magnitude lower than the areas surrounding Indian and European nuclear fuel reprocessing plants (NFRPs). 129 I discharge history in combination with the wind field analysis indicates that Indian NFRPs are the primary sources of 129 I in the STP, and the Indian summer monsoon played a crucial interactive role in transporting airborne radioactive pollutants from South Asia to the STP interior. The spatial distribution of 129 I and 127 I in lichens distributed across Mt. Galongla reveals that the Yarlung Zangbo Grand Canyon serves as a key transport channel. The findings provide a deep understanding of the origins and long-distance trans-boundary transport of both 129 I and other volatile airborne radioactive pollutants to the STP.

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Section: Resultssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Long-Range Transboundary Transport of Iodine-129 from South Asia to the Southern Tibetan Plateau Revealed by Moss and Lichen

Zhang,

Cheng,

Hou

et al. 2024

Environ. Sci. Technol. Lett.

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“…Chemical preparation for 129 I determination is based on a microwave digestion method that has been described in detail elsewhere [9]. In short, about 6 ml of concentrated HNO 3 and 2 ml of iodine carrier (Woodward Iodine, 1 mg/ml) are added to 0.5 g of sample material and introduced into the MW oven at 200°C for 20 min for digestion purposes.…”

Section: Radiochemical Proceduresmentioning

confidence: 99%

Long-lived radionuclides in residues from operation and decommissioning of nuclear power plants

López-Gutiérrez

Gómez-Guzmán

Chamizo

et al. 2013

Nuclear Instruments and Methods in Physics Research Section B:

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“…Over the past decades, lichens have been used in monitoring studies of the ecological state of anthropogenically disturbed natural territories (Agha et al 2016;Abas et al 2019). Lichens have been used as bioindicators of atmospheric precipitation of heavy metals, organic compounds and radioactive elements (Gómez-Guzmán et al 2010). Both epiphytic and epigeal lichens have been used as indicators of air pollution (Vannini et al 2017;Kularatne and De Freitas 2013).…”

Section: Introductionmentioning

confidence: 99%

Epiphytic and epigeal lichens as bioindicators of air pollution in the Burabay National Park, Kazakhstan

BUKABAYEVA,

ABIYEV,

SILYBAYEVA

et al. 2023

Biodiversitas

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Abstract. Bukabayeva Z, Abiyev S, Silybayeva B, Assanova U, Sharipkhanova A, Sagdatkyzy B. 2023. Epiphytic and epigeal lichens as bioindicators of air pollution in the Burabay National Park, Kazakhstan. Biodiversitas 24: 2701-2709. Lichens are recognized as a symbiotic association between a fungus (mycobiont) and a chlorophyll-containing partner (photobiont). Because lichens receive all their nutrients from the atmosphere, they are very sensitive to air quality and can be used as bioindicators of pollution by heavy metals, organic compounds and radioactive elements in the air. This study aimed to evaluate the potential of lichens as bioindicators of the heavy metal content in the air in the Burabay National Park, northern Kazakhstan. In the period from 2018 to 2022, we studied the floristic composition of lichens in the national park. To inform air pollution level, we determined the quantitative characteristics and projective cover of an epiphytic lichen Evernia prunastri (L.) Ach. at different heights above ground level, and the heavy-metal content in an epigeal lichen Cladonia alpestris (L.) Rabenh (Syn. Cladonia stellaris (Opiz) Pouzar & V?zda) at different distances from the road edge. We identified 56 species of lichen belonging to 23 genera and 16 families on the roadsides or in the nearby forest. We found that the average number of individuals of E. prunastri decreased as the tree trunk height increased. The largest number of individuals (11.3) was observed at a height of 60 cm, and the smallest (2.5), at a height of 150 cm. The analysis of C. alpestris samples taken at different distances (50, 100, 150, 200 m) from the roadside showed that the concentrations of Pb, Cr, Cd, As, Ga, V, and ?s were high, and for all the elements studied, except for Mn and Be, exceeded Maximum Allowable Concentration. Our study demonstrates that E. prunastri and C. alpestris are sensitive to air pollution from road traffic and can be used as biomonitors of heavy metal pollution in the study area. Because of the ever-increasing anthropogenic pressure on the vegetation of the Burabay National Park, we recommend further research and monitoring of its lichen biota.

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Analysis of 129I in lichens by accelerator mass spectrometry through a microwave-based sample preparation method

Cited by 13 publications

References 12 publications

Long-Range Transboundary Transport of Iodine-129 from South Asia to the Southern Tibetan Plateau Revealed by Moss and Lichen

Long-Range Transboundary Transport of Iodine-129 from South Asia to the Southern Tibetan Plateau Revealed by Moss and Lichen

Long-lived radionuclides in residues from operation and decommissioning of nuclear power plants

Epiphytic and epigeal lichens as bioindicators of air pollution in the Burabay National Park, Kazakhstan

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