Marge Uppin "Geological sources and hydrochemistry of fluoride and boron in Silurian-Ordovician aquifer system" | University of Tartu

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Contacts of UT units

Faculty of Arts and Humanities
Faculty phone: 
+372 737 5341
Faculty address: 
Jakobi 2, rooms 116–121, 51005 Tartu
  • Dean's Office
    Faculty phone: 
    + 372 737 5341
    Faculty address: 
    Jakobi 2, rooms 116–121, 51005 Tartu
  • Institute of History and Archaeology
    Faculty phone: 
    +372 737 5651
    Faculty address: 
    Jakobi 2, 51005 Tartu
  • Institute of Estonian and General Linguistics
    Faculty phone: 
    +372 737 5221
    Faculty address: 
    Jakobi 2, 51005 Tartu
  • Institute of Philosophy and Semiotics
    Faculty phone: 
    +372 737 5314
    Faculty address: 
    Jakobi 2, rooms 309–352, 51005 Tartu
  • Institute of Cultural Research
    Faculty phone: 
    (+372) 737 5223
    Faculty address: 
    Ülikooli 16, 51003 Tartu
  • School of Theology and Religious Studies
    Faculty phone: 
    +372 737 5301
    Faculty address: 
    Ülikooli 18–310, 50090 Tartu
  • College of Foreign Languages and Cultures
    Faculty address: 
    Lossi 3, 51003 Tartu
  • Viljandi Culture Academy
    Faculty phone: 
    +372 435 5232
    Faculty address: 
    Posti 1, 71004 Viljandi
Faculty of Social Sciences
Faculty phone: 
+372 737 5957
Faculty address: 
Lossi 36, 51003 Tartu
  • Dean's Office
    Faculty phone: 
    + 372 737 5900
    Faculty address: 
    Lossi 36, 51003 Tartu
  • Institute of Education
    Faculty phone: 
    +372 737 6440
    Faculty address: 
    Salme 1a–29, 50103 Tartu
  • Johan Skytte Institute of Political Studies
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    +372 737 5582
    Faculty address: 
    Lossi 36–301, 51003 Tartu
  • School of Economics and Business Administration
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    Narva mnt 18, 51009 Tartu
  • Institute of Psychology
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    Näituse 2, 50409 Tartu
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Faculty of Medicine
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  • Dean's Office
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  • Institute of Biomedicine and Translational Medicine
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    Biomeedikum, Ravila 19, 50411 Tartu
  • Institute of Pharmacy
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  • Institute of Dentistry
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  • Institute of Clinical Medicine
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    L. Puusepa 8, 50406 Tartu
  • Institute of Family Medicine and Public Health
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    Faculty address: 
    Ravila 19, 50411 Tartu
  • Institute of Sport Sciences and Physiotherapy
    Faculty phone: 
    +372 737 5360
    Faculty address: 
    Jakobi 5–205, 51005 Tartu
Faculty of Science and Technology
Faculty phone: 
+372 737 5820
Faculty address: 
Vanemuise 46–208, 51014 Tartu
  • Dean's Office
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    +372 737 5820
    Faculty address: 
    Vanemuise 46–208, 51005 Tartu
  • Institute of Computer Science
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    +372 737 5445
    Faculty address: 
    Narva mnt 18, 51009 Tartu
  • Estonian Marine Institute
    Faculty phone: 
    +372 671 8902
    Faculty address: 
    Mäealuse 14, 12618 Tallinn
  • Institute of Physics
    Faculty address: 
    W. Ostwaldi 1, 50411 Tartu
  • Institute of Chemistry
    Faculty phone: 
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    Faculty address: 
    Ravila 14a, 50411 Tartu
  • Institute of Mathematics and Statistics
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    Narva mnt 18, 51009 Tartu
  • Institute of Molecular and Cell Biology
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    Riia 23, 23b–134, 51010 Tartu
  • Tartu Observatory
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    Observatooriumi 1, Tõravere, 61602 Tartumaa
  • Institute of Technology
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    Nooruse 1, 50411 Tartu
  • Institute of Ecology and Earth Sciences
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    Faculty address: 
    Vanemuise 46, 51003 Tartu
Institutions
  • Library
    Faculty phone: 
    +372 737 5702
    Faculty address: 
    W. Struve 1, 50091 Tartu
  • Youth Academy
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    +372 737 5581
    Faculty address: 
    Uppsala 10, 51003 Tartu
  • Institute of Genomics
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    +372 737 4000
    Faculty address: 
    Riia 23b, 51010 Tartu
  • Museum
    Faculty phone: 
    +372 737 5674
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    Lossi 25, 51003 Tartu
  • University of Tartu Natural History Museum and Botanical Garden
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    Faculty address: 
    Vanemuise 46, 51003 Tartu
Support Units
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    Faculty address: 
    Ülikooli 18a, 51005 Tartu
  • Centre for Entrepreneurship and Innovation
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    +372 737 6339
    Faculty address: 
    Lossi 3, III floor, 51003 Tartu
  • University Office in Tallinn
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    +372 737 6600
    Faculty address: 
    Teatri väljak 3, 10143 Tallinn
  • Estates Office
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    +372 737 5137
    Faculty address: 
    Ülikooli 18a, 51005 Tartu
  • Finance Office
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    +372 737 5125
    Faculty address: 
    Jakobi 4, 51005 Tartu
  • Grant Office
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    +372 737 6215
    Faculty address: 
    Lossi 3, III floor, 51003 Tartu
  • Information Technology Office
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    Ülikooli 18, rooms 302 and 304, 50090 Tartu
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  • Marketing and Communication Office
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    Ülikooli 18, 50090 Tartu
  • Procurement Office
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    Ülikooli 18a, 51005 Tartu
  • Rector's Strategy Office
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    Ülikooli 18, 50090 Tartu
  • Student Council
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  • University of Tartu Press
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Other Units
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  • Tartu Students’ Club
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  • Tartu University Hospital
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  • University of Tartu Foundation
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  • View all other units

Marge Uppin "Geological sources and hydrochemistry of fluoride and boron in Silurian-Ordovician aquifer system"

Date: 
12.12.2013 - 12:15 to 14:15

Supervisor: TÜ ÖMI vanemteadur Enn Karro, PhD
Opponent: Timo Tarvainen, Soome Geoloogia Uurimiskeskus, vanemteadur, PhD

Summary:
Health problems related to drinking water in Estonia are mainly caused by the high levels of fluoride and boron in groundwater. Low concentrations of fluoride (below 0.5 mg/l) in drinking water have a beneficial effect on dental health by reducing the incidence of caries, and long-term exposure to excessive fluoride (above 1.5 mg/l) may cause dental and skeletal fluorosis. Excessive concentrations of boron (above 1.0 mg/l) in drinking water lead to malfunctioning of the reproductive system, low fetal weights; also, incidences of metabolistic disorders and acute neurological effects have been observed. The purpose of this study is to examine distribution, hydrochemical behavior and geological sources of fluorides and boron in Silurian-Ordovician aquifer system, which is an important drinking water source in Estonia. High fluoride (up to 6.1 mg/l) and boron (up to 2.1 mg/l) concentrations are mostly recorded in western Estonia and deeper portion of the aquifer system, where groundwater chemical type is HCO3-Cl-Na-Mg-Ca, water is alkaline, and its Ca2+ content is low. The aquifer system consists of diverse limestone and dolomite with K-bentonite interlayers composed of altered volcanic material. Leaching of the host rock are considered to be the main source of high fluoride and boron concentrations in groundwater. Fluorine and boron contents in limestones and dolomites vary from 100 to 500 mg/kg and 5 to 20 mg/kg, reaching up to 1000 mg/kg and 150 mg/kg in marlstones, respectively. K-bentonites are also rich in fluorine (400-4500 mg/kg) and boron (50-1000 mg/kg). Generally, the increase of the clay fraction is followed by the increase in the fluorine and boron contents in the carbonate rocks. Further, batch dissolution tests with different carbonate rocks were performed in order to examine the dissolution of fluoride and boron. The results of the tests showed that the amount of leached fluoride and boron is proportional to the content of these elements in the rock samples and higher amounts of both elements were rather leached out from rock samples rich in clay minerals. Thus, clay rich sediments, providing ion-exchange and adsorption sites for fluoride and boron, are the probable sources of fluoride and boron in Silurian-Ordovician aquifer system in western Estonia.

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Ravila Street 14a, room 1019
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