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Alyssa E. Shiel on Muck Rack

Alyssa E. Shiel

Corvallis, United States
As seen in: Nature
Environmental geochemist @ Oregon State University. Tweeting about earth science, women in science, changes in higher ed and professional development.
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Articles

Lead-sheathed telecom cables and historic leaded gasoline emissions substantially raise environmental lead levels in Portland, Oregon - Communications Earth & Environment

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By Alyssa E. Shiel
| Nature Verified
Abstract We conducted a high-resolution study of lead in an urban moss, Orthotrichum lyellii, to better understand lead distributions and sources in Portland, Oregon (United States). The outdoor lead landscape is found to be heterogenous, with lead concentrations varying with age of neighborhood: on average 8.3× and 19× the rural background in newer (≥1948) and older neighborhoods (≤1915), respectively.
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Honey as a biomonitor for a changing world

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By Kate Smith Verified, Alyssa E. Shiel, Dominique Weis, Marghaleray Amini
| Nature Verified
Abstract Urban geochemistry is an emerging field in which key scientific and societal challenges, including rapid urbanization and population growth, compel investigation of readily accessible biomonitors to determine the source, transport and fate of heavy metal pollutants in cities. Lead isotopic analyses of honey have recently proven its efficacy as a biomonitor for Pb source apportionment applications.
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Field Application of 238U/235U Measurements To Detect Reoxidation and Mobilization of U(IV)

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By Thomas Johnson, Craig C. Lundstrom, Noah E. Jemison, Alyssa E. Shiel
| American Chemical Society
Biostimulation to induce reduction of soluble U(VI) to relatively immobile U(IV) is an effective strategy for decreasing aqueous U(VI) concentrations in contaminated groundwater systems. If oxidation of U(IV) occurs following the biostimulation phase, U(VI) concentrations increase, challenging the long-term effectiveness of this technique.
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