SEGH Events

15th International Congress of the Geological Society of Greece

22 May 2019
Athens, Greece
The International Congresses of the Geological Society of Greece are multidisciplinary earth science events, focusing on, but not limited to, the broader Aegean region and its surroundings, with the view to highlighting the contribution of geosciences to the study of natural resources, natural hazards and environment.

The 15th International Congress of the Geological Society of Greece – GSG2019: “Understanding and Protecting our Living Planet Earth”, will be held at the premises of Harokopio University, Athens, Greece, between 22-24 May 2019. SEGH will be joint convening the special session T4.S1: Geochemical mapping for environmental and resource management.

(Image credit: GSG 2019)

Geochemical mapping for environmental and resource management (T4.S1)

(Jointly organized by the IUGS Commission on Global Geochemical Baselines (CGGB); the Society for Environmental Geochemistry and Health (SEGH); and the EuroGeoSurveys Geochemistry Expert Group)

Conveners: Ar. Argyraki, (NKUA), A. Liakopoulos (IGME), A. Demetriades (IUGS-CGGB)

Keynote Speakers: Anna Ladenberger, Geological Survey of Sweden and Andrew Hursthouse, Univ. of the West of Scotland, UK


Session description: Geochemical maps are the principal means of presenting the spatial distribution of chemical elements and compounds in materials occurring at or below the Earth’s surface. The patterns revealed by geochemical mapping can provide information on a wide range of Earth processes at different scales, from nanometres to thousands of kilometres.

For example, continental- and regional-scale geochemical projects can identify districts of enhanced mineral potential within which targeted exploration can be conducted. They also provide the geochemical baseline that is required to evaluate effectively local-scale environmental projects. Mapping at a sub-mineral-grain scale can provide a basis for understanding mineralisation processes and to determine optimal strategies for extraction of valuable target elements, while the sub-micron distribution of trace elements in Earth materials can provide insights into their speciation, environmental fate and bioavailability. The focus of the session will be on geochemical surveys at all mapping scales for the study of the environment and natural resources. Our main objective is to provide the opportunity for young researchers to present their work and benefit from the interaction with well- established applied geochemistry experts. We particularly welcome studies that have combined geochemical data with data from other sources in order to provide tools for effective environmental and resource management.

For more information, please visit the GSG 2019 website

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Science in the News

Latest on-line papers from the SEGH journal: Environmental Geochemistry and Health

  • The society for environmental Geochemistry and health (SEGH): a retrospect 2019-02-22
  • Air quality and PM 10 -associated poly-aromatic hydrocarbons around the railway traffic area: statistical and air mass trajectory approaches 2019-02-19

    Abstract

    Diesel engine railway traffic causes atmosphere pollution due to the exhaust emission which may be harmful to the passengers as well as workers. In this study, the air quality and PM10 concentrations were evaluated around a railway station in Northeast India where trains are operated with diesel engines. The gaseous pollutant (e.g. SO2, NO2, and NH3) was collected and measured by using ultraviolet–visible spectroscopy. The advanced level characterizations of the PM10 samples were carried out by using ion chromatography, Fourier-transform infrared, X-ray diffraction, inductively coupled plasma optical emission spectrometry , X-ray photoelectron spectroscopy, field-emission scanning electron microscopy with energy-dispersive spectroscopy, and high-resolution transmission electron microscopy with energy-dispersive spectroscopy techniques to know their possible environmental contaminants. High-performance liquid chromatography technique was used to determine the concentration of polycyclic aromatic hydrocarbons to estimate the possible atmospheric pollution level caused by the rail traffic in the enclosure. The average PM10 concentration was found to be 262.11 µg m−3 (maximum 24 hour) which indicates poor air quality (AQI category) around the rail traffic. The statistical and air mass trajectory analysis was also done to know their mutual correlation and source apportionment. This study will modify traditional studies where only models are used to simulate the origins.

  • The geochemistry of geophagic material consumed in Onangama Village, Northern Namibia: a potential health hazard for pregnant women in the area 2019-02-18

    Abstract

    Ingestion of geophagic materials might affect human health and induce diseases by different ways. The purpose of this study is to determine the geochemical composition of geophagic material consumed especially by pregnant women in Onangama Village, Northern Namibia and to assess its possible health effects. X-ray fluorescence and inductively coupled plasma mass spectrometry were used in order to determine the major, and trace elements as well as anions concentrations of the consumed material. The geochemical analysis revealed high concentrations of aluminium (Al), calcium (Ca), iron (Fe), magnesium (Mg), manganese (Mn), potassium (K), sodium (Na), and silica (Si); and trace elements including arsenic (As), chromium (Cr), mercury (Hg), nickel (Ni) and vanadium (V) as well as sulphate (SO42−), nitrate (NO3), and nitrite (NO2) anions comparing to the recommended daily allowance for pregnant women. The pH for some of the studied samples is alkaline, which might increase the gastrointestinal tract pH (pH < 2) and cause a decrease in the bioavailability of elements. The calculated health risk index (HRI > 1) revealed that Al and Mn might be a potential risk for human consumption. Based on the results obtained from the geochemical analysis, the consumption of the studied material might present a potential health risk to pregnant women including concomitant detrimental maternal and foetal effects.