Distribution of Selected Trace Elements (As, Be, Bi, Cd, Cr, Hg, Ni, Pb, Th, Tl, U, W) in 476 Norwegian Crystalline Bedrock Groundwaters

Frengstad, B., Banks, D. , Midtgård Skrede, A. K. and Siewers, U. (1999) Distribution of Selected Trace Elements (As, Be, Bi, Cd, Cr, Hg, Ni, Pb, Th, Tl, U, W) in 476 Norwegian Crystalline Bedrock Groundwaters. In: XXIXth IAH Congress "Hydrogeology and Land Use Management", Bratislava, Bratislava, Slovakia, 06-10 Sep 1999, pp. 43-48.

Abstract

Of 1604 groundwaters sampled from wells in Norwegian crystalline bedrock, 13.9% exceeded the recommended action level of 500 Bq /1 radon and 16.1% exceeded the drinking water limit of 1.5 m g/ 1 fluoride. 476 of these 1604 samples were selected, on the basis of geographical and lithological representativity , for ICP-MS analysis of a range of trace elements . Very few violations of recognised drinking water limits were observed for Bi, Cd, Cr, Hg, Pb , Tl or W . 7 of 476 samples exceeded 10 μg/1 As , 31/476 exceeded 0.2 μg/1 Be (Russian limit; only 1/476 samples exceeded the American limit of 4 μg/1), 6/476 exceeded 50 μg/1 Ni, while 85/476 (18%) exceeded the American drinking water limit of 20 μg/1 U. The maximum recorded Be, Th, Tl and U concentrations were 6.6, 3.1, 0 .25 and 750 μg/1, respectively . All of these four elements exhibit elevated concentrations in granitic aquifers, as do Rn and F.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Banks, Mr David
• Authors: Frengstad, B., Banks, D., Midtgård Skrede, A. K., and Siewers, U.
• Subjects: Q Science > QD Chemistry; Q Science > QE Geology
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy