SEGH Articles

SEGH 2015 Conference Report

24 September 2015
Bratislava welcomed over 100 delegates from over 25 countries to SEGH 2015.

The Society for Environmental Geochemistry and Health (SEGH) in collaboration with The State Geological Institute of Dionýz Štúr, Bratislava and the project team of GEOHEALTH organised the 31st International SEGH Conference in Bratislava, June 22-26th 2015. The conference was organised under the auspices of Ministry of Environment of the Slovak Republic and supported by financial instrument Life+.

Bratislava welcomed over 100 delegates from over 25 countries to SEGH 2015.

The main conference topic was the link between environment and health.

More than 80 contributions presented at SEGH 2015 as oral presentations or posters were specialized across the three main thematic groups:

1.         Effects of contamination of the geological environment on human health

2.         Effect of the deficit or excess of chemical elements in the geological environment on human health

3.         Linking of geochemical and medical data.

The first two topics have received global attention for decades. The third thematic group is relatively new. Investigating the influences of the geological environment on human health is a challenging task and linking geochemical and medical data could be an effective approach.

Topic 1 attracted the majority of speakers who presented their studies on aspects of contamination of the geological environment including water, soil, stream sediments, air, food-chain, and the urban environment. Keynote lectures were given by: Stanislav Rapant (opening lecture), Andrew Hursthouse (urban environment), Andy Cundy (contaminated sites and wastes) and Taicheng An (risk assessment and analytical procedures). Special afternoon session by Chinese delegates brought innovative views on the analytical methods and procedures used for risk assessment.

Topics 2 and 3 were opened by 3 keynote speakers. František Koíšek and Alex Stewart brought us an overview of current knowledge within the topic “Deficit and/or excess of chemicals in the geological environment and their health effects on humans”. Mark Cave approached this issue by linking geochemical and health data through the use of health deprivation indices.

This year a student prize was given to Daniela Zuzolo from Italy for her poster
"Assessment of th environmental conditions of the Calore river basin (South Italy): a stream sediment approach". Congratulations.

The scientific programme of SEGH 2015 was built up from highly diversified keynote, plenary and poster lectures from various fields of research on relationship between environment and health and brought us a various views on the issue of the impact of contaminated geological environment on human health.

All conference details, photos and book of abstracts are available downloading on the conference website www.geology.sk/geohealth/segh-conference-2015.

During SEGH 2015 board a transfer of the post of SEGH President happened. We would like to thank ex-president Andrew Hursthouse for his leading of SEGH as well as we wish success to Chaosheng Zhang as new SEGH president.

The scientific programme was accompanied by social events including sightseeing tour by historical city train through the main historical sights of Bratislava city and conference dinner with local music that took place in a very pleasant restaurant in Holiday Inn Bratislava. All delegates participated on these events have enjoyed these social events. 

The second part of the excursion was the visit of open-air mining museum in Banská Štiavnica – the most significant historical mining town in the Slovak Republic, innscribed in the UNESCO World Heritage list. Surface as well as undeground exhibition offered to delegates an overview of mediavel historical times of mining of silver and gold in this region.

A special visit of SEGH chairman´s summer cottage in beautiful mountainous area of Banská Štiavnica region was a top end of the day.

Finally, we would like to thank all delegates coming from over the 20 countries for their participation in SEGH 2015 and their support to us as organizers. We hope you have enjyoed Bratislava and you are warmly welcome to return to our country.

We hope we can all meet in Brussels for SEGH 2016. See www.segh.net for details.

 

by Katarína Fajčíková and Stanislav Rapant

(SEGH 2015 organisers)

Keep up to date

Submit Content

Members can keep in touch with their colleagues through short news and events articles of interest to the SEGH community.

Science in the News

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

  • Fate and partitioning of heavy metals in soils from landfill sites in Cape Town, South Africa: a health risk approach to data interpretation 2019-06-14

    Abstract

    The fate and persistence of trace metals in soils and sludge from landfill sites are crucial in determining the hazard posed by landfill, techniques for their restoration and potential reuse purposes of landfill sites after closure and restoration. A modified European Community Bureau of Reference’s (BCR) sequential extraction procedure was applied for partitioning and evaluating the mobility and persistence of trace metals (As, Cd, Cr, Cu, Ni, Pb, Sb, Se, Zn) in soils from three landfill sites and sludge sample from Cape Town, South Africa. Inductively coupled plasma optical emission spectroscopy was used to analyze BCR extracts. The mobility sequence based on the BCR mobile fraction showed that Cu (74–87%), Pb (65–80%), Zn (59–82%) and Cd (55–66%) constituted the mobile metals in the soils from the three sites. The mobility of Cu, Zn and Ni (> 95%) was particularly high in the sludge sample, which showed significant enrichment compared to the soil samples. Geo-accumulation index (Igeo) and risk assessment code were used to further assess the environmental risk of the metals in the soils. Exposure to the soils and sludge did not pose any non-cancer risks to adult and children as the hazard quotient and hazard index values were all below the safe level of 1. The cancer risks from Cd, Cr and Ni require that remedial action be considered during closure and restoration of the landfill sites.

  • An investigation into the use of < 38 µm fraction as a proxy for < 10 µm road dust particles 2019-06-13

    Abstract

    It is well documented that a large portion of urban particulate matters is derived from road dust. Isolating particles of RD which are small enough to be inhaled, however, is a difficult process. In this study, it is shown for the first time that the < 38 µm fraction of road dust particles can be used as a proxy for road dust particles < 10 µm in bioaccessibility studies. This study probed similarities between the < 10 and < 38µm fractions of urban road dust to show that the larger of the two can be used for analysis for which larger sample masses are required, as is the case with in vitro analysis. Road dust, initially segregated to size < 38 µm using sieves, was again size segregated to < 10 µm using water deposition. Both the original < 38 µm and the separated < 10 µm fractions were then subject to single particle analysis by SEM–EDX and bulk analysis by ICP-OES for its elemental composition. Dissolution tests in artificial lysosomal fluid, representative of lung fluid, were carried out on both samples to determine % bioaccessibility of selected potentially harmful elements and thus probe similarities/differences in in vitro behaviour between the two fractions. The separation technique achieved 94.3% of particles < 10 µm in terms of number of particles (the original sample contained 90.4% as determined by SEM–EDX). Acid-soluble metal concentration results indicated differences between the samples. However, when manipulated to negate the input of Si, SEM–EDX data showed general similarities in metal concentrations. Dissolution testing results indicated similar behaviour between the two samples in a simulated biological fluid.

  • Degradation of petroleum hydrocarbons in unsaturated soil and effects on subsequent biodegradation by potassium permanganate 2019-06-13

    Abstract

    To date, the oxidation of petroleum hydrocarbons using permanganate has been investigated rarely. Only a few studies on the remediation of unsaturated soil using permanganate can be found in the literature. This is, to the best of our knowledge, the first study conducted using permanganate pretreatment to degrade petroleum hydrocarbons in unsaturated soil in combination with subsequent bioaugmentation. The pretreatment of diesel-contaminated unsaturated soil with 0.5-pore-volume (5%) potassium permanganate (PP) by solution pouring and foam spraying (with a surfactant) achieved the total petroleum hydrocarbon (TPH) removal efficiencies of 37% and 72.1%, respectively. The PP foam, when coupled with bioaugmentation foam, further degraded the TPH to a final concentration of 438 mg/kg (92.1% total reduction). The experiment was conducted without soil mixing or disturbance. The relatively high TPH removal efficiency achieved by the PP–bioaugmentation serial foam application may be attributed to an increase in soil pH caused by the PP and effective infiltration of the remediation agent by foaming. The applied PP foam increased the pH of the acidic soil, thus enhancing microbial activity. The first-order biodegradation rate after PP oxidation was calculated to be 0.068 d−1. Furthermore, 94% of the group of relatively persistent hydrocarbons (C18–C22) was removed by PP–bioaugmentation, as verified by chromatogram peaks. Some physicochemical parameters related to contaminant removal efficiency were also evaluated. The results reveal that PP can degrade soil TPH and significantly enhance the biodegradation rate in unsaturated diesel-contaminated soil when combined with bioaugmentation foam.