SEGH Articles

The SEGH 2016 conference was a great success!!

26 January 2017
SEGH Brussels
 
110 delegates from 22 countries attended the meeting. Amongst them, 34 students actively participated, whom 5 received an EAG grant (covering the registration fee). 114 abstracts were reviewed by the scientific committee and accepted after potential corrections. The scientific programme was intense, including 59 talks and 55 posters. 
 
Four keynote speakers were invited: Prof. Reto Gieré from University of Pennsylvania (USA) , Prof. Montserrat Filella from Université de Genève (Switzerland), Prof. Elijah Petersen from NIST (USA), Prof. Vincent Balter from Ecole Normale Supérieure de Lyon (France) covering a large range of subjects like : Assessment of environmental and health impacts of airborne particulate matter;Nanoparticle reference materials; Criticity of trace elements in the current and future environments; Cancer-driven (Cu, Zn) isotopic fractionation.
A field-trip organized in the Liège's area ended the conference: the visit of the peat bogs from the Hautes-Fagnes - precious archives of the atmospheric deposits through the Holocene, was followed by the visit of the slag heaps surrounding Liège, which record a strong fingerprint of the metallurgical industries but currently develop a natural new ecosystem with specific metal-tolerant plants.
 
Three awards were distributed at the end of the event to: 
- Sebastiaan van de Velde (SEGH Best Oral)
- Alice Jarosikova (SEGH Best Poster)
- T. Gabriel Enge (Malcolm Brown Award for outstanding young scientist)
 
See the SEGH website  http://segh.net/home/ for more details and articles on the works performed by the SEGH 2016 young scientist medalists.
 
The city of Brussels was extremely welcoming with a sunny weather and the conference venue was a convivial open space where delegates have deeply appreciated to lunch, discover Belgian beers, and overall initiate lively scientific discussions. 
 
In summary, the SEGH 2016 conference in Brussels has reached its initial objectives and even exceeded them; this annual conference provided a real scientific platform of high-quality for exchanges between complementary environment and health related disciplines: geochemistry, ecotoxicology, earth sciences, medicine, epidemiology, laboratory technologies and methodologies.
 
This would not have been possible without the organisation team from ULB (Université Libre de Bruxelles) and the precious contributions from all the participants. Thank you very much to all delegates!
 
Looking forward to seeing you in China in 2017.
 
Nadine Mattielli.
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Latest on-line papers from the SEGH journal: Environmental Geochemistry and Health

  • Exposure to respirable and fine dust particle over North-Central India: chemical characterization, source interpretation, and health risk analysis 2019-12-10

    Abstract

    This study enhances the understanding of the particulate matters (PM2.5 and PM10) and their physical and chemical behavior over the Taj Mahal, Agra, in North-Central India. The mass concentration was determined, and the shape and size of the particles and chemical characterizations have been carried out using SEM–EDX. The high level and significant variation of PM10 (162.2 µg m−3) and PM2.5 (83.9 µg m−3) were observed. The exceedance factor of the present study region is in critical and moderate condition. Morphological characterization reveals the particles of different shapes and sizes, while elemental analysis shows the presence of Si, Al, Fe, Ca, K, Cl, Mg, Na, Cu, and Zn. The dominance of Si indicated the contribution of natural sources, i.e., soil over this region. Three significant sources, viz. soil/road paved dust/vegetative emissions, vehicular/industrial emissions, and intermingling of dust and combustion particles, have been identified using principal component analysis over North-Central India. Health risk analysis of particulate matter identified carcinogenic and non-carcinogenic metals in the present study, which comes in contact with human beings during inhalation. The non-carcinogenic risk was much higher than the acceptable level. The high carcinogenic risks were found in Zn in PM10 and Cu in PM2.5 for both children and adults.

  • Integration of remote sensing data and in situ measurements to monitor the water quality of the Ismailia Canal, Nile Delta, Egypt 2019-12-10

    Abstract

    The Ismailia Canal is one of the most important tributaries of the River Nile in Egypt. It is threatened by extinction from several sources of pollution, in addition to the intersection and nearness of the canal path with the Bilbayes drain and the effluent from the two largest conventional wastewater treatment plants in Greater Cairo. In this study, the integration of remote sensing and geospatial information system techniques is carried out to enhance the contribution of satellite data in water quality management in the Ismailia Canal. A Landsat-8 operational land imager image dated 2018 was used to detect the land use and land cover changes in the area of study, in addition to retrieving various spectral band ratios. Statistical correlations were applied among the extracted band ratios and the measured in situ water quality parameters. The most appropriate spectral band ratios were extracted from the NIR band (near infrared/blue), which showed a significant correlation with eight water quality metrics (CO3, BOD5, COD, TSS, TDS, Cl, NH4, and fecal coliform bacteria). A linear regression model was then established to predict information about these important water quality parameters along Ismailia Canal. The developed models, using linear regression equations for this study, give a set of powerful decision support frameworks with statistical tools to provide comprehensive, integrated views of surface water quality information under similar circumstances.

  • Geophagy among East African Chimpanzees: consumed soils provide protection from plant secondary compounds and bioavailable iron 2019-12-01

    Abstract

    Geophagy, the intentional consumption of earth materials, has been recorded in humans and other animals. It has been hypothesized that geophagy is an adaptive behavior, and that clay minerals commonly found in eaten soil can provide protection from toxins and/or supplement micronutrients. To test these hypotheses, we monitored chimpanzee geophagy using camera traps in four permanent sites at the Budongo Forest Reserve, Uganda, from October 2015–October 2016. We also collected plants, and soil chimpanzees were observed eating. We analyzed 10 plant and 45 soil samples to characterize geophagic behavior and geophagic soil and determine (1) whether micronutrients are available from the soil under physiological conditions and if iron is bioavailable, (2) the concentration of phenolic compounds in plants, and (3) if consumed soils are able to adsorb these phenolics. Chimpanzees ate soil and drank clay-infused water containing 1:1 and 2:1 clay minerals and > 30% sand. Under physiological conditions, the soils released calcium, iron, and magnesium. In vitro Caco-2 experiments found that five times more iron was bioavailable from three of four soil samples found at the base of trees. Plant samples contained approximately 60 μg/mg gallic acid equivalent. Soil from one site contained 10 times more 2:1 clay minerals, which were better at removing phenolics present in their diet. We suggest that geophagy may provide bioavailable iron and protection from phenolics, which have increased in plants over the last 20 years. In summary, geophagy within the Sonso community is multifunctional and may be an important self-medicative behavior.