Journal Title
Title of Journal: Environ Geochem Health
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Abbravation: Environmental Geochemistry and Health
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Publisher
Springer Netherlands
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Authors: Zane VincevicaGaile Karina Stankevica
Publish Date: 2017/01/27
Volume: 40, Issue: 5, Pages: 1725-1738
Abstract
Organicrich freshwater sediments formed from the remains of water plants plankton and benthic organisms which are transformed by microorganisms and mixed with mineral components supplied from the lake basin are known as gyttja sapropel or dy Gyttja is a valuable natural resource that can be used in various fields such as agriculture forestry construction chemical industry balneology and the latter ones are especially interested in chemical composition and safety of natural materials The aim of the study was to investigate micro and macroelement content of gyttja derived from lakes of eastern Latvia northeast of Europe Depending on composition sediment samples were identified as peaty various algae green algae diatom carbonate and organicsilicate types of gyttja Dried samples were wetdigested by heating in HNO3/H2O2 solution until complete mineralization Sample solutions were analysed by atomic absorption spectrometry AAS to detect concentration of Ca Fe K Mg Mn Na and Zn but inductively coupled plasma mass spectrometry ICPMS was applied for As Ba Cd Co Cr Cu Li Ni Pb Rb Se Sr and V concentration measurements Total content of elements was variable higher macroelement concentration was detected for gyttja of carbonate type but higher microelement concentration—for organicsilicate gyttja As concentration of several elements was much lower than permitted by the European Union legislation gyttja is not only safe but also highly valuable resource applicable in organic agriculture There is a potential to use gyttja as a peloid in health care but element bioavailability should be estimated likewise
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