SEGH Articles

# SEGH International Conference, Guangzhou, China 2017

24 May 2018
The 33rd International conference of the Society for Environmental Geochemistry and Health (SEGH 2017) was successfully held in Guangzhou, China

Delegates attend the Closing Ceremony of SEGH 2017 in Guangzhou, China

The 33rd international conference of the Society for Environmental Geochemistry and Health (SEGH 2017) was successfully held in Guangzhou, China between June 30th – July 4th, 2017. This conference was hosted by the Guangdong University of Technology and the Guangzhou Institute of Geochemistry, CAS, China. Approximately 550 abstracts were submitted and grouped into 27 sessions. More than 500 delegates came from 27 countries and regions. Three academics and four distinguished scientists from Europe, USA and China delivered plenary lectures. Seventy seven keynote speakers as well as 90 invited speakers were in attendance. In addition, 66 volunteers from local universities provided great service for this conference. Based on this exciting conference, a virtual special issue, including 20 full-length submitted papers on Ecotoxicology and Environmental Safety, was organized. Ten Best Poster Prizes were awarded by the conference with the support of the American Geophysical Union (AGU) and Elsevier publishers. A selection of photographs from the converence are provided below.

Dr Chaosheng Zhang gives a welcome address to delegates

Prof Taicheng An, Chair of SEGH 2017, intorduces the event and welcomes delegates

Prof Xin Chen, President of Guangdong University of Technology, gives a welcoming address

Prof Shu Tao from the Chinese Academy of Sciences (CAS) delivers a plenary lecture

Delegates attend a plenary session

Captivated delegates listening intently to a plenary lecture

Poster Prizes are presented. Many congratulations to:

Yuling Wu, Xiamen University, China: Temporal Trends And Transport of Perfluorinated Compounds (PFCs) in A Subtropical Estuary: Jiulong River Estuary, China

Weijun Tian, Ocean University of China, China: Application of Cinder gel-beads/reeds Combination Strategy for Bioremediation of High Molecular Weight PAHs- Contaminated Estuarine Wetlands

Yuechang Wei, China University of Petroleum, Beijing, China: Novel Active Structure of Noble Metal-Oxides on 3DOM Oxides with Enhanced Catalytic Activity for Soot Oxidation

Honghong Wang, Guangzhou Institute of Geochemistry, CAS, China: Theoretical Investigation of Formaldehyde Adsorption on the Anatase TiO2 (101) Surface

Weigang Wang, Institute of Chemistry, CAS, China: Optical Properties of Secondary Organic Aerosols Derived From Long-Chain Alkanes under Various Nox and Seed Conditions

Yuanhong Zhong, Guangdong University of Technology, China: Facile Synthesis of Chromium Substituted Magnetite Nanorods with High Performance of Heterogeneous UVA-LED/Fenton Catalytic Activity

Wanbing Gong, Institute of Solid State Physics, CAS, China: H2-Hydrogenation/Transfer Hydrogenation of Bio-Derived Furfural using Sulfonate Group Modified (Cu, Ni) Catalysts

Haibo Yin, Division of Materials and Manufacturing Science Graduate School of Engineering, China: High-surface-area Plasmonic MoO3-x: Rational Synthesis and Enhanced Ammonia Borane Dehydrogenation Activity

Shang Chen, Central China Normal University, China: Promoted Surface Oxygen Vacancy Regeneration for Sustainable Molecular Oxygen Activation on BiOCl Facets via Phosphoric Acid Modification

Xiaoran Wei, Shandong University: The Effect of Silica Nanoparticles on Phospholipid Membrane Fluidity

Keep up to date

Eldoret, Kenya

06 July 2020

## 37th SEGH International Conference: Geochemistry for Sustainable Development

Nanjing City, China

09 November 2020

30 December 2020

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## Science in theNews

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

• Distribution of metal(loid)s in particle size fraction in urban soil and street dust: influence of population density 2020-01-18

### Abstract

Assessment of street dust is an invaluable approach for monitoring atmospheric pollution. Little information is available on the size distribution of contaminants in street dusts and urban soils, and it is not known how the population density would influence them. This research was carried out to assess the size distribution of trace metal(loid)s in street dust and urban soil, and to understand how population density might influence the size-resolved concentration of metal(loid)s. Three urban areas with a high, medium and low population density and a natural area were selected and urban soil and street dust sampled. They were fractionated into 8 size fractions: 2000–850, 850–180, 180–106, 106–50, 50–20, 20–10, 10–2, and < 2 µm. The concentration of Pb, Zn, Cu, Cd, Cr, Ni, As, and Fe was determined, and enrichment factor and grain size fraction loadings were computed. The results indicated that the concentration of Pb, Zn, Cu, Cd, and Cr was highly size dependent, particularly for particles < 100 µm, especially for street dust. Low concentrations of Ni and As in street dust and urban soil were size and population density independent. Higher size dependency of the metals concentration and the higher degree of elemental enrichment in the street dust fractions than the urban soils indicate higher contribution of human-induced pollution to the dust. Findings also confirm the inevitability of size fractionation when soils or dusts are environmentally assessed, particularly in moderately to highly polluted areas. Otherwise, higher concentrations of certain pollutants in fine-sized particles might be overlooked leading to inappropriate decisions for environmental remediation.

• Soil–plant system and potential human health risk of Chinese cabbage and oregano growing in soils from Mn- and Fe-abandoned mines: microcosm assay 2020-01-17

### Abstract

In Portugal, many abandoned mines are often close to agricultural areas and might be used for plant food cultivation. Soils in the vicinity of two Mn- and Fe-abandoned mines (Ferragudo and Rosalgar, SW of Portugal) were collected to cultivate two different food species (Brassica rapa subsp. pekinensis (Lour.) Hanelt and Origanum vulgare L.). Chemical characterization of the soil–plant system and potential risk of adverse effects for human health posed by plants associated with soil contamination, based on the estimation of hazard quotient (HQ), were assessed in a microcosm assay under greenhouse conditions. In both soils, the average total concentrations of Fe and Mn were above the normal values for soils in the region and their concentration in shoots of both species was very high. Brassica rapa subsp. pekinensis grew better in Ferragudo than in Rosalgar soils, and it behaved as an excluder of Cu, Mn, Fe, S and Zn in both soils. The HQ for Cu, Fe, Mn and Zn in the studied species grown on both soils was lower than unit indicating that its consumption is safe. The high Mn tolerance found in both species might be due in part to the high contents of Fe in the soil available fraction that might contribute to an antagonism effect in the uptake and translocation of Mn. The obtained results emphasize the need of further studies with different food crops before cultivation in the studied soils to assess health risks associated with high metal intake.

• Concentration, fractionation, and ecological risk assessment of heavy metals and phosphorus in surface sediments from lakes in N. Greece 2020-01-13

### Abstract

The presence of phosphorus (P) and heavy metals (HMs) in surface sediments originating from lakes Volvi, Kerkini, and Doirani (N. Greece), as well as their fractionation patterns, were investigated. No statistically significant differences in total P content were observed among the studied lakes, but notable differences were observed among sampling periods. HM contents in all lakes presented a consistent trend, i.e., Mn > Cr > Zn > Pb > Ni > Cu > Cd, while the highest concentrations were recorded in Lake Kerkini. Most of the HMs exceeded probable effect level value indicating a probable biological effect, while Ni in many cases even exceeded threshold effects level, suggesting severe toxic effects. P was dominantly bound to metal oxides, while a significant shift toward the labile fractions was observed during the spring period. The sum of potentially bioavailable HM fractions followed a downward trend of Mn > Cr > Pb > Zn > Cu > Ni > Cd for most lakes. The geoaccumulation index Igeo values of Cr, Cu, Mn, Ni, and Zn in all lakes characterized the sediments as “unpolluted,” while many sediments in lakes Volvi and Kerkini were characterized as “moderately to heavily polluted” with regard to Cd. The descending order of potential ecological risk $$E_{\text{r}}^{i}$$ was Cd > Pb > Cu > Ni > Cr > Zn > Mn for all the studied lakes. Ni and Cr presented the highest toxic risk index values in all lake sediments. Finally, the role of mineralogical divergences among lake sediments on the contamination degree was signified.