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Title: Elevated concentrations of U and co-occurring metals in abandoned mine wastes in a northeastern Arizona Native American community

Journal Article · · Environmental Science and Technology
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  1. Univ. of New Mexico, Albuquerque, NM (United States)
  2. Southwest Research and Information Center, Albuquerque, NM (United States)
  3. Tachee Uranium Concerncs Committee, Blue Gap, AZ (United States)
  4. Central New Mexico Community College, Albuquerque, NM (United States)
  5. Stanford Univ., Stanford, CA (United States)

The chemical interactions of U and co-occurring metals in abandoned mine wastes in a Native American community in northeastern Arizona were investigated using spectroscopy, microscopy and aqueous chemistry. The concentrations of U (67–169 μg L–1) in spring water samples exceed the EPA maximum contaminant limit of 30 μg L–1. Elevated U (6,614 mg kg–1), V (15,814 mg kg–1), and As (40 mg kg–1) concentrations were detected in mine waste solids. Spectroscopy (XPS and XANES) solid analyses identified U (VI), As (-I and III) and Fe (II, III). Linear correlations for the release of U vs V and As vs Fe were observed for batch experiments when reacting mine waste solids with 10 mM ascorbic acid (~pH 3.8) after 264 h. The release of U, V, As, and Fe was at least 4-fold lower after reaction with 10 mM bicarbonate (~pH 8.3). These results suggest that U–V mineral phases similar to carnotite [K2(UO2)2V2O8] and As–Fe-bearing phases control the availability of U and As in these abandoned mine wastes. Elevated concentrations of metals are of concern due to human exposure pathways and exposure of livestock currently ingesting water in the area. This study contributes to understanding the occurrence and mobility of metals in communities located close to abandoned mine waste sites.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
1345169; IIA-1301346
OSTI ID:
1215426
Journal Information:
Environmental Science and Technology, Vol. 49, Issue 14; ISSN 0013-936X
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 58 works
Citation information provided by
Web of Science

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Cited By (9)

Uranium mobility and accumulation along the Rio Paguate, Jackpile Mine in Laguna Pueblo, NM journal January 2017
Minimal uranium accumulation in lymphoid tissues following an oral 60-day uranyl acetate exposure in male and female C57BL/6J mice journal October 2018
Functionalized electrospun polymer nanofibers for treatment of water contaminated with uranium journal January 2020
Elevated Arsenic and Uranium Concentrations in Unregulated Water Sources on the Navajo Nation, USA journal August 2016
Framework Polymorphism and Modular Crystal Structures of Uranyl Vanadates of Divalent Cations: Synthesis and Characterization of M (UO 2 )(V 2 O 7 ) ( M = Ca, Sr) and Sr 3 (UO 2 )(V 2 O 7 ) 2: Framework Polymorphism and Modular Crystal Structures of Uranyl Vanadates of Divalent Cations: Synthesis and Characterization of M(UO2)(V2O7) (M = Ca, journal July 2019
Respirable Uranyl-Vanadate-Containing Particulate Matter Derived From a Legacy Uranium Mine Site Exhibits Potentiated Cardiopulmonary Toxicity journal April 2018
Mining and Environmental Health Disparities in Native American Communities journal April 2017
Cardiovascular Disease in American Indian and Alaska Native Youth: Unique Risk Factors and Areas of Scholarly Need journal October 2017
Gallbladder cancer: review of a rare orphan gastrointestinal cancer with a focus on populations of New Mexico journal June 2018