Invariance of isotope ratios of lithogenic radionuclides: More evidence for their use as sediment source tracers

K. M. Yeager; P. H. Santschi

doi:10.1016/S0265-931X(03)00068-7

Invariance of isotope ratios of lithogenic radionuclides: More evidence for their use as sediment source tracers

K. M. Yeager, P. H. Santschi

Earth and Environmental Sciences

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Activities of radionuclides in the ²³⁸U (²³⁰Th, ²²⁶Ra, ²¹⁰Pb) and ²³²Th (²³²Th, ²²⁸Th, ²²⁸Ra) decay series were determined in sediments from an east Texas watershed and examined with isotope ratios and compared to particulate organic carbon (POC), % fines (< 63 μm) and total concentrations of Al, Fe and Mn. The objective was to elucidate the presence or absence of relationships affecting the effectiveness of these radionuclides in modeling sediment transport. Strong positive correlations were observed between radionuclides and Mn (Th) and % fines (Ra and Th). Isotope ratios effectively reduce these influences, supporting the contention that isotope ratios offset extrinsic variability in terrestrial sediments. Strong associations of ²¹⁰Pb_xs (excess ²¹⁰Pb) and ²²⁶Ra/²³⁰Th with POC agree with data from marine and terrestrial settings, indicating that the role of POC in isotope fractionation, transport and sequestration merits further investigation.

Original language	English
Pages (from-to)	159-176
Number of pages	18
Journal	Journal of Environmental Radioactivity
Volume	69
Issue number	3
DOIs	https://doi.org/10.1016/S0265-931X(03)00068-7
State	Published - 2003

Bibliographical note

Funding Information:
Funding provided by the Texas Water Development Board, Texas Water Resources Institute, Geological Society of America, The Gulf Coast Association of Geological Sciences, Texas A&M University and the Texas Institute of Oceanography is gratefully acknowledged. Cooperation of numerous landowners in allowing access to field sites is also appreciated. Thanks are also extended to Mr. Chris Courtney for assisting in both field and laboratory work and Ms. M. Michaele Cerf for laboratory assistance and to the three anonymous reviewers for contributing to the improvement of this manuscript.

Keywords

Pb-210
Ra-226
Th-230
Th-232

ASJC Scopus subject areas

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/S0265-931X(03)00068-7

Cite this

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title = "Invariance of isotope ratios of lithogenic radionuclides: More evidence for their use as sediment source tracers",

abstract = "Activities of radionuclides in the 238U (230Th, 226Ra, 210Pb) and 232Th (232Th, 228Th, 228Ra) decay series were determined in sediments from an east Texas watershed and examined with isotope ratios and compared to particulate organic carbon (POC), % fines (< 63 μm) and total concentrations of Al, Fe and Mn. The objective was to elucidate the presence or absence of relationships affecting the effectiveness of these radionuclides in modeling sediment transport. Strong positive correlations were observed between radionuclides and Mn (Th) and % fines (Ra and Th). Isotope ratios effectively reduce these influences, supporting the contention that isotope ratios offset extrinsic variability in terrestrial sediments. Strong associations of 210Pbxs (excess 210Pb) and 226Ra/230Th with POC agree with data from marine and terrestrial settings, indicating that the role of POC in isotope fractionation, transport and sequestration merits further investigation.",

keywords = "Pb-210, Ra-226, Th-230, Th-232",

author = "Yeager, {K. M.} and Santschi, {P. H.}",

note = "Funding Information: Funding provided by the Texas Water Development Board, Texas Water Resources Institute, Geological Society of America, The Gulf Coast Association of Geological Sciences, Texas A&M University and the Texas Institute of Oceanography is gratefully acknowledged. Cooperation of numerous landowners in allowing access to field sites is also appreciated. Thanks are also extended to Mr. Chris Courtney for assisting in both field and laboratory work and Ms. M. Michaele Cerf for laboratory assistance and to the three anonymous reviewers for contributing to the improvement of this manuscript. ",

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doi = "10.1016/S0265-931X(03)00068-7",

language = "English",

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pages = "159--176",

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T1 - Invariance of isotope ratios of lithogenic radionuclides

T2 - More evidence for their use as sediment source tracers

AU - Yeager, K. M.

AU - Santschi, P. H.

N1 - Funding Information: Funding provided by the Texas Water Development Board, Texas Water Resources Institute, Geological Society of America, The Gulf Coast Association of Geological Sciences, Texas A&M University and the Texas Institute of Oceanography is gratefully acknowledged. Cooperation of numerous landowners in allowing access to field sites is also appreciated. Thanks are also extended to Mr. Chris Courtney for assisting in both field and laboratory work and Ms. M. Michaele Cerf for laboratory assistance and to the three anonymous reviewers for contributing to the improvement of this manuscript.

PY - 2003

Y1 - 2003

N2 - Activities of radionuclides in the 238U (230Th, 226Ra, 210Pb) and 232Th (232Th, 228Th, 228Ra) decay series were determined in sediments from an east Texas watershed and examined with isotope ratios and compared to particulate organic carbon (POC), % fines (< 63 μm) and total concentrations of Al, Fe and Mn. The objective was to elucidate the presence or absence of relationships affecting the effectiveness of these radionuclides in modeling sediment transport. Strong positive correlations were observed between radionuclides and Mn (Th) and % fines (Ra and Th). Isotope ratios effectively reduce these influences, supporting the contention that isotope ratios offset extrinsic variability in terrestrial sediments. Strong associations of 210Pbxs (excess 210Pb) and 226Ra/230Th with POC agree with data from marine and terrestrial settings, indicating that the role of POC in isotope fractionation, transport and sequestration merits further investigation.

AB - Activities of radionuclides in the 238U (230Th, 226Ra, 210Pb) and 232Th (232Th, 228Th, 228Ra) decay series were determined in sediments from an east Texas watershed and examined with isotope ratios and compared to particulate organic carbon (POC), % fines (< 63 μm) and total concentrations of Al, Fe and Mn. The objective was to elucidate the presence or absence of relationships affecting the effectiveness of these radionuclides in modeling sediment transport. Strong positive correlations were observed between radionuclides and Mn (Th) and % fines (Ra and Th). Isotope ratios effectively reduce these influences, supporting the contention that isotope ratios offset extrinsic variability in terrestrial sediments. Strong associations of 210Pbxs (excess 210Pb) and 226Ra/230Th with POC agree with data from marine and terrestrial settings, indicating that the role of POC in isotope fractionation, transport and sequestration merits further investigation.

KW - Pb-210

KW - Ra-226

KW - Th-230

KW - Th-232

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JO - Journal of Environmental Radioactivity

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Invariance of isotope ratios of lithogenic radionuclides: More evidence for their use as sediment source tracers

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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