title: Distribution of arsenic concentrations in groundwater of the Seymour Aquifer, Texas, USA.
abstract: The purpose of this study was to investigate arsenic concentrations in the Seymour Aquifer. Discontinuous alluvium of the aquifer occupies a broad, semi-arid region of northern Texas, USA. Throughout the formation's outcrop, permeable deposits and unconfined conditions may facilitate downward travel of contaminants applied to the land surface. Past agricultural practices are a potential source of arsenic to the aquifer. However, of 64 water samples analyzed from 2001-2004, only one exceeded the maximum contaminant level (MCL) of 10 microg/l for arsenic in drinking water. The median arsenic concentration was 2.7 microg/l, and 34% of samples had arsenic concentrations less than 2 microg/l. No relationship between arsenic concentration and well depth was observed.
authors.affiliation: Department of Geography and Environmental Science Program, University of North Texas, USA. hudak@unt.edu
authors.forename: Paul F
authors.initials: PF
authors.lastname: Hudak
mesh_terms: D001151:Arsenic / Q000032:analysis*; D018556:Crops, Agricultural; D004784:Environmental Monitoring; D013781:Texas; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D001151:Arsenic