Meet the Team 

Mr. Jost Dittkrist supports UNITAR’s Chemicals and Waste Management Programme by coordinating the mercury portfolio, including projects related to the ratification and early implementation of the Minamata Convention on Mercury. He has significant experience in international chemicals and waste management topics, including persistent organic pollutants and mercury. Mr. Dittkrist holds a Master in International Affairs, with a focus on international environmental law and economics. He is fluent in English and German and has working knowledge in French and Dutch.

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Mr. Jakob Maag is UNITAR’s senior mercury expert. He trains and assists countries in their implementation of the Minamata Convention on Mercury and provides the technical input for the MercuryLearn platform. He  is the key author of  UN Environment’s Toolkit for identification and quantification of mercury releases, which he continuous to build out and update in corporation with UN Environment. He was the key author and project manager of the first Global Mercury Assessment (2002) and has managed or contributed to many other international and national studies and projects on the mercury issue over the last 23 years: Use and releases inventories, socio-economic assessments, substitution assessments, legal gap analysis, action plans, communication to stakeholders, conference planning, international steering group facilitation, etc. Mr. Maag has also worked with deep and broad studies on many other hazardous chemicals. He is a Master of Science in Civil Engineering with specialisation in environmental chemistry, and is fluent in English and Danish with working experience in French, German, Swedish and Norwegian.

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Mr. Juha Ronkainen is responsible for training and contributing to the technical guidance provided by UNITAR, currently focusing on mercury inventories in MIA projects. Additionally, he also works with National Action Plan projects, where his main interest is in the data collection needed for the national overview of the ASGM sector. Juha has over five years of experience in training and data-driven management. He holds a Master of Science degree in mathematics, complemented with minors of information processing science, philosophy and physics. He is fluent in English and Finnish.  

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Mr. Jorden De Haan supports the mercury team with expertise on socio-economic topics, including assistance to countries in the development of National Action Plans (NAPs) for artisanal and small scale gold mining. His experience includes field research in Sub-Saharan Africa, particularly in conflict-affected countries. Mr. De Haan holds an Advanced Master in Governance and Development, with a specialization in natural resource governance, as well as a Master in Human Resource Studies, with a specialization in occupational health. He is fluent in English and Dutch and has working knowledge in French.

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Ms. Laura Calabuig Fuster  supports the mercury team of UNITAR’s Chemicals and Waste Management Programme by assisting countries in the execution of the Minamata Initial Assessment (MIA) projects and the development of Ratification Dossiers on the Minamata Convention. She also provides expertise on legal issues. Ms. Calabuig holds a law degree and is currently finishing a Master in Legal Practice. She is fluent in Spanish and English and has working knowledge of French.

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Ms. Fernanda Musskopf is responsible for the communication materials of the Chemicals and Waste Management Unit of UNITAR. She also provides support to the programme’s e-Learning courses. She has more than five years of experience on communications and has been working with UNITAR since 2014.

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Mr. Robert Narvaez is a software developer responsible for the development of web applications at UNITAR, including the Mercury Platform. He has degrees in Development Studies and Computer Science.

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UNITAR Offices

UNITAR's headquarters are based in Geneva, Switzerland.

Postal Address

UNITAR, Palais des Nations,
CH-1211 Geneva 10, Switzerland

T: +41 22 917 8400
F: +41 22 917 8047
UN Switchboard: +41 22 917 1234

Street Address

UNITAR, International Environment House,
Chemin des Anémones 11-13,
CH-1219 Châtelaine, Geneva, Switzerland


For general inquiries, please contact

For information related to Chemicals and Waste Management Programme, please contact