May 22th -26th, 2016
We would like to draw your attention to two interesting session at the upcoming SETAC Europe Meeting in Nantes:
I) Detection, identification and quantification of engineered (nano)materials in complex matrices; the session will be chaired by Patrick Bäuerlein and Ralf Kaegi
II) Metals in the Environment: Fate, Speciation and Bioavailability in Water, Soil and Sediment; the session will be chaired by Erik Smolders, Rute F. Domingos, Karel De Schamphelaere, Yann Sivry
In case you want to contribute to the session please check the website of the SETAC meeting for abstract submission: http://nantes.setac.eu/ and keep the deadline for abstract submission: November 25th 2015!
Below detailed session descriptions are attached:
I) Engineered (nano)particles are ubiquitous in environmental matrices, however their identification and quantification is still very challenging, due to the complexity of environmental samples and the vast diversity of these particles. They differ in size and shape, and also their elemental composition is variable. Engineered (nano)particles include inorganic particles, such as nano-TiO2 and nano-Ag, carbon based nanoparticles, such as fullerenes and carbon nanotubes and organic microplastics. Especially the analysis of carbon-based and organic particles can be an intricate problem, as there is an almost unlimited number different variations. Fullerenes can carry various functionalities, carbon nanotubes can be multi-walled or single-walled and microplastics can be made up from for instance polyethylene, polystyrene or polypropylene. Such engineered (nano)particles are already used in many consumer products, such as sunscreens, paints, mouth wash, textiles, food packing materials and food additives and may thus be released into the aquatic environment as already documented by several research reports. However, to develop a scientific understanding of i) the release patterns, ii) the transformation reactions in the environment and iii) the environmental distribution of such pollutants, analytical tools that a capable to detect, identify and quantify these particles in complex matrices are urgently needed.
Recently developed and/or substantially improved analytical techniques such as Orbitrap MS, flow cytometry, pyrolysis GC/MS, field flow fractionation (FFF) coupled mass spectrometry, dynamic and static light scattering as well as single particle ICP-MS and analytical electron microscopy have opened a new research front in analytical chemistry. Using sophisticated analytical tools and combinations thereof, engineered (nano)particles in both their pristine and transformed state after being exposed to different environmental conditions have been investigated in unprecedented detail. Due to the enormous progress recently made in this research field particles can be accurately quantified in simple matrices. The next challenge is to make these highly sophisticated techniques compatible with complex matrices, which ultimately will allow their detection and quantification in complex matrices.
This session aims to integrate contributions focussing on latest developments for nanoparticle and microplastics analysis including explicitly sample preparation techniques to provoke a discussion about most pressing research questions in that field. We invite researchers from academia, government, industry and research institutes to share their latest findings and experiences on methods used for the detection and characterisation of engineered (nano)particles in complex matrices, including food, soil, surface- and wastewater.
II) The knowledge about metal transport, distribution, speciation and bioavailability has considerably increased over the past two decades. Whereas this knowledge has begun to find its way into environmental regulation of metals, environmental science keeps progressing and novel scientific and regulatory questions arise. For instance, established equilibrium models are now accepted for risk assessment, however the equilibrium assumption is not always clearly related with the biouptake processes. The role of both metals dynamic speciation and colloidal fractions under natural conditions can be be crucial on metal risk assessment. However, both aspects largely remains to be qualitatively and quantitatively described. The risk assessment of poorly soluble metal compounds in the environment needs pragmatic models to address the regulatory requirements for testing the myriad of products under natural conditions. This session will welcome all novel contributions covering metal fate, speciation and bioavailability in water, soil and sediments. The contributions can address:
1. Chemical speciation and bioavailability of cationic metals, organometals or toxic oxyanions in the environment;
2. Development/improvement of analytical tools or models;
3. Fate modelling and observations;
4. Bioavailability of metals across different species and exposure routes.