Nitrate, Arsenic and Selenium Concentrations in The Pecos Valley Aquifer, West Texas, USA Metadata

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Title

  • Main Title Nitrate, Arsenic and Selenium Concentrations in The Pecos Valley Aquifer, West Texas, USA

Creator

  • Author: Hudak, Paul F.
    Creator Type: Personal
    Creator Info: University of North Texas

Publisher

  • Name: University of Tehran. Graduate Faculty of Environment
    Place of Publication: [Tehran, Iran]

Date

  • Creation: 2010

Language

  • English

Description

  • Content Description: This article discusses nitrate, arsenic, and selenium concentrations in the Pecos Valley Aquifer in west Texas in the context of local geology and land use.
  • Physical Description: 8 p.

Subject

  • Keyword: nitrate
  • Keyword: selenium
  • Keyword: groundwater
  • Keyword: Texas

Source

  • Journal: International Journal of Environmental Research, 2010, Tehran: University of Tehran. Graduate Faculty of Environment, pp. 229-236

Citation

  • Publication Title: International Journal of Environmental Research
  • Volume: 4
  • Issue: 2
  • Edition: Spring
  • Page Start: 229
  • Page End: 236
  • Peer Reviewed: True

Collection

  • Name: UNT Scholarly Works
    Code: UNTSW

Institution

  • Name: UNT College of Arts and Sciences
    Code: UNTCAS

Rights

  • Rights Access: public

Resource Type

  • Article

Format

  • Text

Identifier

  • ISSN: 1735-6865
  • Archival Resource Key: ark:/67531/metadc152432

Degree

  • Academic Department: Geography
  • Academic Department: Environmental Science

Note

  • Display Note: Abstract: Nitrate, arsenic, and selenium concentrations in the Pecos Valley Aquifer of west Texas compiled, mapped, and analyzed in the context of local geology and land use. Alluvial deposits of sand, silt, clay, and gravel compose the unconfined aquifer. Ranching and farming are predominant land uses in the rural study area. Data were tabulated from 79 water wells with a median depth of 75 m and mapped with a geographic information system (GIS). The wells were sampled between the years 2003 and 2008. Total dissolved solids (TDS) concentrations in the aquifer were very high, with a median value of 2,687 mg/L. Approximately 18% of observations exceeded the 44.27 mg/L drinking water standard for nitrate, whereas 6% exceeded the 10 μg/L standard for selenium. There was a statistically significant, direct correlation between arsenic and selenium, as well as between nitrate and selenium concentrations. Moreover, arsenic and selenium concentrations were significantly higher in shallower wells. Probable sources of groundwater contamination in the study area include natural (geological) sources and agricultural activity.