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Bjørn Frengstad
Researcher at Norwegian University of Science and Technology
Publications - 40
Citations - 1454
Bjørn Frengstad is an academic researcher from Norwegian University of Science and Technology. The author has contributed to research in topics: Groundwater & Heat pump. The author has an hindex of 15, co-authored 37 publications receiving 1265 citations. Previous affiliations of Bjørn Frengstad include Norwegian Geological Survey.
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Drinking water quality in the Ethiopian section of the East African Rift Valley I--data and health aspects.
Clemens Reimann,Kjell Bjorvatn,Bjørn Frengstad,Zenebe Melaku,Redda Tekle-Haimanot,Ulrich Siewers +5 more
TL;DR: Drinking water samples were collected throughout the Ethiopian part of the Rift Valley, separated into water drawn from deep wells, shallow wells, hot springs, springs, rivers and rivers, finding 86% of all wells yield water that fails to pass the quality standards set for drinking water.
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Comparison of the element composition in several plant species and their substrate from a 1 500 000-km2 area in Northern Europe
Clemens Reimann,Friedrich Koller,Bjørn Frengstad,Galina Kashulina,Heikki Niskavaara,Peter Englmaier +5 more
TL;DR: Airborne organic material attached to the leaves can result in high values of these elements without any pollution source and can be used as an indicator of minerogenic dust.
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Variation of 66 elements in European bottled mineral waters
TL;DR: Studying the large natural variation in concentration for many of the 66 studied elements it becomes clear that the authors know little about the natural variation of element concentration in water and the health effects of most elements in drinking water.
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The chemistry of Norwegian groundwaters : III. The distribution of trace elements in 476 crystalline bedrock groundwaters, as analysed by ICP-MS techniques
TL;DR: Groundwater samples from boreholes in Norwegian crystalline bedrock have been analysed by ICP-MS techniques and a range of trace elements appear to be enriched in granitic waters and depleted in anorthositic waters which is to be expected as generally granitic rocks are enriched in trace elements above those inAnorthosites.
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The chemistry of Norwegian groundwaters: I. The distribution of radon, major and minor elements in 1604 crystalline bedrock groundwaters
TL;DR: A quality-controlled hydrogeochemical dataset of 1604 groundwater samples from Norwegian crystalline bedrock aquifers has been obtained and subject to analyses of radon, major and minor elements, pH and alkalinity, and Cumulative probability curves may be constructed to assess the risk of given parameters violating drinking water norms.