Retention by vegetation of radionuclides deposited in rainfall: A literature summary

Anspaugh, L.R.

doi:10.2172/6106888

Cited by 6 publications

(5 citation statements)

References 20 publications

(31 reference statements)

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“…In general, only drops and water films that persist on leaves until evaporation contribute to the pool of leaf-adsorbed chemicals (Figure 5). 223,224 This fact has been well established for particulate and dissolved radionuclides delivered onto pastures and crops by contaminated rain (reviewed by Pröhl 225 and Anspaugh 226 ); with some limitations (discussed at the end of this section), we expect the same principles to be valid also for non-radioactive species and other vegetation types.…”

Section: Behavior Of Rain On Leaf Surfacesmentioning

confidence: 73%

The chemical landscape of leaf surfaces and its interaction with the atmosphere

Ossola,

Farmer

2024

Preprint

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Atmospheric chemists have historically treated plant leaves as inert surfaces that merely emit volatile hydrocarbons through their stomata. However, a growing body of evidence suggests that leaves are ubiquitous substrates for multiphase reactions of atmospheric relevance – implying the presence of chemicals on their surfaces. This Review provides an evidence-based overview of the chemistry and reactivity of the leaf surface’s “chemical landscape”, the dynamic ensemble of molecules and particles that cover plant leaves. We classified chemicals as endogenous (originating from the leaf and its biome) or exogenous (delivered from the environment), highlighting the biological, geographical, and meteorological factors driving their relative contributions. Based on available data, we predicted ≫ 2 µg cm-2 of organics on a typical leaf, leading to a global estimate of ≫ 3 Tg available for multiphase reactions. Our work also highlighted three major knowledge gaps: (i) the key (but still overlooked) role of ambient water in enabling the leaching of endogenous substances and mediating aqueous chemistry; (ii) the role of phyllosphere biofilms in shaping leaf surface chemistry and reactivity; (iii) the paucity of studies on the multiphase reactivity of main atmospheric oxidants with leaf-adsorbed chemicals. Although biased towards available data, we hope this Review will spark a renewed interest on the leaf surface’s chemical landscape and motivate the establishment of multidisciplinary collaborations to move the field forward.

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Section: Behavior Of Rain On Leaf Surfacesmentioning

confidence: 73%

The chemical landscape of leaf surfaces and its interaction with the atmosphere

Ossola,

Farmer

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…In general, only drops and water films that persist on leaves until evaporation contribute to the pool of leaf-adsorbed chemicals (Figure 5). 223,224 This fact has been well established for particulate and dissolved radionuclides delivered onto pastures and crops by contaminated rain (reviewed by Proḧl 225 and Anspaugh 226 ); with some limitations (discussed at the end of this section), we expect the same principles to be valid also for nonradioactive species and other vegetation types.…”

Section: Pollenmentioning

confidence: 76%

The Chemical Landscape of Leaf Surfaces and Its Interaction with the Atmosphere

Ossola,

Farmer

2024

Chem. Rev.

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Atmospheric chemists have historically treated leaves as inert surfaces that merely emit volatile hydrocarbons. However, a growing body of evidence suggests that leaves are ubiquitous substrates for multiphase reactions−implying the presence of chemicals on their surfaces. This Review provides an overview of the chemistry and reactivity of the leaf surface's "chemical landscape", the dynamic ensemble of compounds covering plant leaves. We classified chemicals as endogenous (originating from the plant and its biome) or exogenous (delivered from the environment), highlighting the biological, geographical, and meteorological factors driving their contributions. Based on available data, we predicted ≫2 μg cm −2 of organics on a typical leaf, leading to a global estimate of ≫3 Tg for multiphase reactions. Our work also highlighted three major knowledge gaps: (i) the overlooked role of ambient water in enabling the leaching of endogenous substances and mediating aqueous chemistry; (ii) the importance of phyllosphere biofilms in shaping leaf surface chemistry and reactivity; (iii) the paucity of studies on the multiphase reactivity of atmospheric oxidants with leaf-adsorbed chemicals. Although biased toward available data, we hope this Review will spark a renewed interest in the leaf surface's chemical landscape and encourage multidisciplinary collaborations to move the field forward. CONTENTS

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“…However, retention may be higher for wet deposition or for deposition onto wet surfaces . Anspaugh (1987) examined 20 sets of experimental data on measurements of f v,wet for grass and alfalfa; 11 sets included data on values of B that ranged from 0.02 to 0.34 kg m −2 . Some values were reported as negative.…”

Section: Radionuclides Of Interestmentioning

confidence: 99%

A Methodology for Calculation of Internal Dose Following Exposure to Radioactive Fallout from the Detonation of a Nuclear Fission Device

et al. 2022

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The purpose of this paper is to provide a methodology for the calculation of internal doses of radiation following exposure to radioactive fallout from the detonation of a nuclear fission device. Reliance is on methodology previously published in the open literature or in reports not readily available, though some new analysis is also included. Herein, we present two methodologic variations: one simpler to implement, the other more difficult but more flexible. The intention is to provide in one place a comprehensive methodology. Pathways considered are (1) the ingestion of vegetables and fruits contaminated by fallout directly, (2) the ingestion of vegetables and fruits contaminated by continuing deposition by rain-or irrigation-splash and resuspension, (3) the ingestion of vegetables and fruits contaminated by absorption of radionuclides by roots after tillage of soil, (4) the non-equilibrium transfer of shortlived radionuclides through the cow-milk and goat-milk food chains, (5) the equilibrium transfer of long lived radionuclides through milk and meat food chains, and (6) inhalation of descending fallout. Uncertainty in calculated results is considered. This is one of six companion papers that describe a comprehensive methodology for assessing both external and internal dose following exposures to fallout from a nuclear detonation. Input required to implement the dose-estimation model for any particular location consists of an estimate of the post-detonation external gamma-exposure rate and an estimate of the time of arrival of the fallout cloud. The additional data required to make such calculations are included in the six companion papers.

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Retention by vegetation of radionuclides deposited in rainfall: A literature summary

Cited by 6 publications

References 20 publications

The chemical landscape of leaf surfaces and its interaction with the atmosphere

The chemical landscape of leaf surfaces and its interaction with the atmosphere

The Chemical Landscape of Leaf Surfaces and Its Interaction with the Atmosphere

A Methodology for Calculation of Internal Dose Following Exposure to Radioactive Fallout from the Detonation of a Nuclear Fission Device

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