Welcome to MercOx project


The Need for the Project

Hg is one of the most toxic metals. In the atmosphere, three forms of Hg exists: gaseous elemental mercury (GEM), gaseous oxidised mercury (GOM), and particulate bound mercury (PBM). Currently, traceable calibration methods only exist for elemental mercury (Hg(0)). However, such measurements are also needed for oxidised Hg species, i.e. Hg(II) to meet the requirements of EU regulation and the implementation of the Minamata Convention. For the control and assessment of Hg concentrations in the environment, it is essential to be able to monitor all Hg species. Therefore, the main challenges of this project are:

the development of reliable and direct Hg(II) measurement techniques and reliable and traceable Hg(II) standards;
methods for accurately comparing the Hgtot concentration in generated elemental and oxidised Hg reference gas standards;
to improve sampling methods, traceable reference standards, validated methods for the on-line measurement of Hg in the atmosphere and under field conditions, and a comparison of Hg species inter-conversion;
to trace the origin and fate of atmospheric Hg by using the Hg isotopic signatures.
Mercury cycling in the environment (Adopted from Gustin et al., 2016)
Mercury cycling in the environment (Adopted from Gustin et al., 2016) - Click to enlarge
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News & Activites

Latest Entries


WP2 meeting at the European Winter Plasma Conference

A very productive WP2 meeting with a high impact on the MercOx project delivery was hold at the European Winter Conference on Plasma Spectrochemistry in Pau France (2-8 February 2019). The meeting was mainly focused on the achievements in the area of traceable Hg(II) determinations, including method development and validation, with a clear link to the development of primary Hg(II) gas standard....

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Stakeholder events

Global mercury assesment meeting: GMA Expert Group Meeting

will be held at the Jožef Stefan Institute, Department of Environmental Sciences, from November 21st to November 22nd, 2017.

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Workshops & Courses

MercOx special session at ICMGP 2019

The International Conference on Mercury as a Global Pollutant (ICMGP) is approaching - Krakow, 8-13 September, 2019. Special session proposed by MercOx consortium is included in Session 1 "Metrological Traceability for mercury analysis and speciation". The deadline for Abstract registration for presenters is March 4th, 2019. Find out more about the event...

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Our worldwide partners

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  • Jožef Stefan Institute
  • Jamova cesta 39, 1000 Ljubljana, Slovenia
  • Phone: +386 1 477 39 00
  • Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
  • Project Coordinator
  • Prof. Milena Horvat, Ph.D.
  • Head, Department of Environmental Sciences
  • Phone: +386 1 5885 389
  • Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
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The EMPIR initiative is co-funded by the European Union's Horizon 2020 research and innovation programme and the EMPIR Participating States