Radionuclide distribution in soil and undecayed vegetative litter samples in a riparian system at the Savannah River Site, SC

Chieh Ming Wu, Olorunfemi Adetona, Luke Naeher, Brian James Viner, Tim Jannik, Allan Hepworth, Eric Doman, Teresa Eddy

Research output: Contribution to journalArticle

Abstract

The aim of this study is to comprehensively investigate radionuclide concentrations in surface soil and un-decayed vegetative litter along four stream systems (i.e. Fourmile Branch, Lower Three Runs, Pen Branch, and Steel Creek) at the Savannah River Site (SRS), Aiken, South Carolina. Soil and litter samples from systematically spaced 12 pairs (contaminated or uncontaminated) of plots along the four streams were analyzed for 16 distinct radionuclide activities. Lower radionuclide concentrations were observed in soil and litter samples collected along Pen Branch compared to the other 3 streams. The anthropogenic radionuclide with the highest activity was 137Cs in soil (10.6–916.9 Bq/kg) and litter (8.0–222.3 Bq/kg), while the naturally occurring radionuclides possessing the highest concentration in the samples were 40K (33.5–153.7 Bq/kg and 23.1–56.0 Bq/kg in soil and litter respectively) and 226Ra (55.6–159.9 Bq/kg and 30.2–101.8 Bq/kg in soil and litter respectively). A significant difference (p < 0.05) of radionuclide concentrations between paired-plots across four streams was observed for 241Am, 137Cs, 238Pu, 239Pu, and 226Ra in both contaminated and non-contaminated samples. 137Cs and uranium isotopes had the highest litter-to-soil correlation in contaminated (rho = 0.70) and uncontaminated plots (rho = 0.31–0.41), respectively. 90Sr was the only radionuclide with higher radioactive concentrations in litter (12.65–37.56 Bq/kg) compared to soil (1.61–4.79 Bq/kg). The result indicates that 1) historical discharges of anthropogenic 137Cs was the most important contributor of radiation contamination in the riparian environment at SRS, 2) 90Sr was the only radionuclide with higher concentration in litter than in soil, and 3) no apparent pattern in deposition density in soil or litter along downstream was observed for the radionuclides measured in this study.

Original languageEnglish (US)
Pages (from-to)604-620
Number of pages17
JournalJournal of Environmental Radioactivity
Volume192
DOIs
StatePublished - Dec 1 2018
Externally publishedYes

Fingerprint

Rivers
Radioisotopes
radionuclide
litter
Soil
Soils
river
soil
distribution
uranium isotope
Uranium
Steel
Isotopes
soil surface
Contamination
steel
Radiation

Keywords

  • Litter
  • Radiation contamination
  • Radionuclides
  • Riparian
  • Savannah River Site
  • Soil

ASJC Scopus subject areas

  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

Cite this

Radionuclide distribution in soil and undecayed vegetative litter samples in a riparian system at the Savannah River Site, SC. / Wu, Chieh Ming; Adetona, Olorunfemi; Naeher, Luke; Viner, Brian James; Jannik, Tim; Hepworth, Allan; Doman, Eric; Eddy, Teresa.

In: Journal of Environmental Radioactivity, Vol. 192, 01.12.2018, p. 604-620.

Research output: Contribution to journalArticle

Wu, Chieh Ming ; Adetona, Olorunfemi ; Naeher, Luke ; Viner, Brian James ; Jannik, Tim ; Hepworth, Allan ; Doman, Eric ; Eddy, Teresa. / Radionuclide distribution in soil and undecayed vegetative litter samples in a riparian system at the Savannah River Site, SC. In: Journal of Environmental Radioactivity. 2018 ; Vol. 192. pp. 604-620.
@article{5991fd10145747e887ba932d085bc151,
title = "Radionuclide distribution in soil and undecayed vegetative litter samples in a riparian system at the Savannah River Site, SC",
abstract = "The aim of this study is to comprehensively investigate radionuclide concentrations in surface soil and un-decayed vegetative litter along four stream systems (i.e. Fourmile Branch, Lower Three Runs, Pen Branch, and Steel Creek) at the Savannah River Site (SRS), Aiken, South Carolina. Soil and litter samples from systematically spaced 12 pairs (contaminated or uncontaminated) of plots along the four streams were analyzed for 16 distinct radionuclide activities. Lower radionuclide concentrations were observed in soil and litter samples collected along Pen Branch compared to the other 3 streams. The anthropogenic radionuclide with the highest activity was 137Cs in soil (10.6–916.9 Bq/kg) and litter (8.0–222.3 Bq/kg), while the naturally occurring radionuclides possessing the highest concentration in the samples were 40K (33.5–153.7 Bq/kg and 23.1–56.0 Bq/kg in soil and litter respectively) and 226Ra (55.6–159.9 Bq/kg and 30.2–101.8 Bq/kg in soil and litter respectively). A significant difference (p < 0.05) of radionuclide concentrations between paired-plots across four streams was observed for 241Am, 137Cs, 238Pu, 239Pu, and 226Ra in both contaminated and non-contaminated samples. 137Cs and uranium isotopes had the highest litter-to-soil correlation in contaminated (rho = 0.70) and uncontaminated plots (rho = 0.31–0.41), respectively. 90Sr was the only radionuclide with higher radioactive concentrations in litter (12.65–37.56 Bq/kg) compared to soil (1.61–4.79 Bq/kg). The result indicates that 1) historical discharges of anthropogenic 137Cs was the most important contributor of radiation contamination in the riparian environment at SRS, 2) 90Sr was the only radionuclide with higher concentration in litter than in soil, and 3) no apparent pattern in deposition density in soil or litter along downstream was observed for the radionuclides measured in this study.",
keywords = "Litter, Radiation contamination, Radionuclides, Riparian, Savannah River Site, Soil",
author = "Wu, {Chieh Ming} and Olorunfemi Adetona and Luke Naeher and Viner, {Brian James} and Tim Jannik and Allan Hepworth and Eric Doman and Teresa Eddy",
year = "2018",
month = "12",
day = "1",
doi = "10.1016/j.jenvrad.2018.02.017",
language = "English (US)",
volume = "192",
pages = "604--620",
journal = "Journal of Environmental Radioactivity",
issn = "0265-931X",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Radionuclide distribution in soil and undecayed vegetative litter samples in a riparian system at the Savannah River Site, SC

AU - Wu, Chieh Ming

AU - Adetona, Olorunfemi

AU - Naeher, Luke

AU - Viner, Brian James

AU - Jannik, Tim

AU - Hepworth, Allan

AU - Doman, Eric

AU - Eddy, Teresa

PY - 2018/12/1

Y1 - 2018/12/1

N2 - The aim of this study is to comprehensively investigate radionuclide concentrations in surface soil and un-decayed vegetative litter along four stream systems (i.e. Fourmile Branch, Lower Three Runs, Pen Branch, and Steel Creek) at the Savannah River Site (SRS), Aiken, South Carolina. Soil and litter samples from systematically spaced 12 pairs (contaminated or uncontaminated) of plots along the four streams were analyzed for 16 distinct radionuclide activities. Lower radionuclide concentrations were observed in soil and litter samples collected along Pen Branch compared to the other 3 streams. The anthropogenic radionuclide with the highest activity was 137Cs in soil (10.6–916.9 Bq/kg) and litter (8.0–222.3 Bq/kg), while the naturally occurring radionuclides possessing the highest concentration in the samples were 40K (33.5–153.7 Bq/kg and 23.1–56.0 Bq/kg in soil and litter respectively) and 226Ra (55.6–159.9 Bq/kg and 30.2–101.8 Bq/kg in soil and litter respectively). A significant difference (p < 0.05) of radionuclide concentrations between paired-plots across four streams was observed for 241Am, 137Cs, 238Pu, 239Pu, and 226Ra in both contaminated and non-contaminated samples. 137Cs and uranium isotopes had the highest litter-to-soil correlation in contaminated (rho = 0.70) and uncontaminated plots (rho = 0.31–0.41), respectively. 90Sr was the only radionuclide with higher radioactive concentrations in litter (12.65–37.56 Bq/kg) compared to soil (1.61–4.79 Bq/kg). The result indicates that 1) historical discharges of anthropogenic 137Cs was the most important contributor of radiation contamination in the riparian environment at SRS, 2) 90Sr was the only radionuclide with higher concentration in litter than in soil, and 3) no apparent pattern in deposition density in soil or litter along downstream was observed for the radionuclides measured in this study.

AB - The aim of this study is to comprehensively investigate radionuclide concentrations in surface soil and un-decayed vegetative litter along four stream systems (i.e. Fourmile Branch, Lower Three Runs, Pen Branch, and Steel Creek) at the Savannah River Site (SRS), Aiken, South Carolina. Soil and litter samples from systematically spaced 12 pairs (contaminated or uncontaminated) of plots along the four streams were analyzed for 16 distinct radionuclide activities. Lower radionuclide concentrations were observed in soil and litter samples collected along Pen Branch compared to the other 3 streams. The anthropogenic radionuclide with the highest activity was 137Cs in soil (10.6–916.9 Bq/kg) and litter (8.0–222.3 Bq/kg), while the naturally occurring radionuclides possessing the highest concentration in the samples were 40K (33.5–153.7 Bq/kg and 23.1–56.0 Bq/kg in soil and litter respectively) and 226Ra (55.6–159.9 Bq/kg and 30.2–101.8 Bq/kg in soil and litter respectively). A significant difference (p < 0.05) of radionuclide concentrations between paired-plots across four streams was observed for 241Am, 137Cs, 238Pu, 239Pu, and 226Ra in both contaminated and non-contaminated samples. 137Cs and uranium isotopes had the highest litter-to-soil correlation in contaminated (rho = 0.70) and uncontaminated plots (rho = 0.31–0.41), respectively. 90Sr was the only radionuclide with higher radioactive concentrations in litter (12.65–37.56 Bq/kg) compared to soil (1.61–4.79 Bq/kg). The result indicates that 1) historical discharges of anthropogenic 137Cs was the most important contributor of radiation contamination in the riparian environment at SRS, 2) 90Sr was the only radionuclide with higher concentration in litter than in soil, and 3) no apparent pattern in deposition density in soil or litter along downstream was observed for the radionuclides measured in this study.

KW - Litter

KW - Radiation contamination

KW - Radionuclides

KW - Riparian

KW - Savannah River Site

KW - Soil

UR - http://www.scopus.com/inward/record.url?scp=85042919599&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85042919599&partnerID=8YFLogxK

U2 - 10.1016/j.jenvrad.2018.02.017

DO - 10.1016/j.jenvrad.2018.02.017

M3 - Article

C2 - 29525107

AN - SCOPUS:85042919599

VL - 192

SP - 604

EP - 620

JO - Journal of Environmental Radioactivity

JF - Journal of Environmental Radioactivity

SN - 0265-931X

ER -