trace element Articles
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Physical, chemical, bacteriological and radioisotopic parameters from springs and wells around Jocotitlan volcano, Mexico
Samples from seven springs and two wells around Jocotitlan volcano (Mexico), mainly used as drinking water supplies, were studied for physical, chemical, bacteriological and radioisotopic parameters. The temperature of the majority of the water was 5°C higher than the average atmospheric temperature of the zone, indicating a geothermal potential. The water type was bicarbonated mixed, related to ...
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Use of mosses to study atmospheric deposition of trace elements: contributions from investigations in Norway
This paper presents essential features of biomonitoring work carried out in the author's laboratory during more than 25 years using various analytical techniques for the determination of over 50 elements. A substantial part of this work concerns large-scale deposition surveys in Norway using the moss Hylocomium splendens, where five nationwide surveys have been carried out since 1977. ...
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Using k0-UNAA for the determination of depleted uranium in the moss biomonitoring technique
The use of ammunition containing depleted uranium (DU) in several military actions is of growing health concern to the population related to the risk arising from contamination of the environment with DU penetrators and dust. Environmental monitoring of uranium and its isotopic ratios therefore become important parameters since they allow for source identification. Neutron activation analysis ...
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Using SIMS to Determine Isotopic Compositions
Isotopic composition refers to how many different isotopes of an element are present and presented by highlighting the abundance of each isotope in atom percentage (%). This percentage indicates how many atoms in a sample are a specific isotope from all possible atoms in one element. Understanding isotopic composition is essential for many applications across the science and engineering ...
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Researchers: Carcinogen Can Occur Naturally in Water
Representatives of the U.S. Fish & Wildlife Service and Duke Energy take samples on the Dan River, which was polluted by a coal ash spill. Scientists have found that hexavalent chromium in well water, long attributed to coal ash contamination, may occur naturally. Hexavalent chromium is a carcinogen found in drinking water supplies. Many have thought its presence is due to human activity, ...
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