Comparability of mercury measurements in air - 13:00-15:30
The special sessions proposed will address challenges in measurement traceability of mercury and its species, which is ultimately needed to secure comparability of the results at the global level.
The main topics to be addressed are:
- Evaluation and comparison of existing and novel primary generation methods to obtain mercury gas standards, and validation and traceability of dynamic mercury vapour generators used for calibration of gaseous elemental Hg (GEM) and oxidized Hg (GOM).
- Traceability and reliability of measurements of mercury analysis and speciation in the gas phase (air, emission sources); with a special focus on oxidized mercury species.
- Realization of traceable primary standards and the development of a facility to prepare gaseous mercury standards, including its measurement uncertainty budget.
- Demonstration of novel, traceable calibration procedures and measurements
13:00 – 13:15 Introduction: A need for comparable results in the Effectiveness evaluation for the Minamata Convention ---- MercOx project in brief (M. Horvat)
13:15 – 14:30 Latest developments in traceable Hg measurements in air
- USA (NIST / US EPA) approach (Steve Long)
- Tekran (Eric Prestbo)
- Japan (experience of NIES and NMIJ), Dr Noriyuki Suzuki
- Traceability of elemental gaseous mercury (Iris Krom, VSL)
- Traceability of gaseous oxidized mercury (Timo Rajamäki, VTT)
The workshop is organized by the consortium of the EMPIR (European Metrology Programme for Innovation and Research) joint research project “MercOx - Metrology of oxidized mercury” and its stakeholder groups.
Achieving data management, visualization and analysis - 9:30-12:00
Geoff Millard, Caitlin Genet Eger, Jaqueline Gerson
Learning to use R an open-source statistical software packageSee a hands-on demonstration using real data and learn to use the open-source statistical programming software R (https://www.r-project.org/) for data management, visualization, and analysis. Statistical management can get expensive. Learning this open-source software helps researchers everywhere keep their costs down while still allowing them to make significant contributions to the body of mercury science.
Assessment and Management of Hg-Contaminated Sites - 13:00-15:30
Site assessment and management developmentsMercury contamination by point sources (e.g., mining, industry) occurs globally. Assessment and management of these sites can benefit from the substantial body of research into Hg cycling in the environment, risks posed to humans and wildlife, and methods for remediation. This workshop will cover identification of potential Hg-contaminated sites, characterization of the nature and extent of contamination, development of conceptual site models of Hg transport and fate, assessment of potential risks to human health and the environment, and risk management and remediation.
Site assessment and management discussionActual examples of site assessment and management will be discussed. Particular attention will be paid to areas where research is needed to better assess Hg behavior, risks, and remedial options. The target audience includes managers of sites with identified or potential mercury issues, graduate students interested in applied environmental science, and researchers curious to see how scientific findings are used in decision-making and to learn what additional research is needed in the context of practical problems. Specific topics include:
- Types of Hg-contaminated sites
- Site investigations
- Conceptual site models
- Ecological and human health risk assessments
- Management options including implementation of remediation measures
Atmospheric Trajectory and Plume Dispersion Simulations with the HYSPLIT Model – 9:30-15:30
Requirements of Participants: Participants will use their own laptops for hands-on modeling exercises throughout the Workshop. Before the Workshop, participants will receive instructions on how to install the HYSPLIT model and download needed course materials before coming to ICMGP.
Controlling incidental mercury emissions – 13:00-15:30
Advances in mercury controls and monitoring technology for large stationary sourcesUnder the Minamata Convention on mercury, there is a remit for signatory countries to identify how to eliminate incidental emissions of mercury coming from combustion sources. This workshop will begin with an overview of the aims of the convention and the challenges faced by large sources such as coal combustion and cement manufacture. . Monitoring of mercury at the low concentrations found at large sources can be a challenge and so an overview will be given on how to obtain reliable and representative data. Pre-treatment of fossil fuels, co-benefit effects of control systems for air pollution from fossil fuels, and specific controls for mercury, have all been under development for a number of years and have become more affordable, available and effective. These technologies will be reviewed, including examples and case-studies from real plants and real system manufacturers. Some of these technologies have potential application to other sources of emissions such as the cement and non-ferrous metal industries. This full-day event allows attendees to hear about mercury monitoring and control and to interact with those who have carried out pilot and full-scale projects in regions such as the USA, Europe, Africa, Russia and S E Asia.
Advising Immigrant Populations on Fish Consumption - 9:30-12:30
Mary Ellen Turyk, Susan Nathalie, Jon Meiman
Advising Immigrant PopulationsWorldwide, the largest number of international immigrants originate from Asia. From 2000-2017, the number of Asian migrants increased by 62%. In 2017, 42 million Asian immigrants were living in other continents, predominantly Europe (48%), North America (40%) and Oceania (7%). In the United States and Canada, Asian immigrants have higher exposures to mercury than other racial/ethnic groups due to frequent fish consumption. Fish consumption advisories to mitigate mercury exposure frequently focus on select types of seafood commonly consumed by the general population. However, this advice may not adequately address risks of fish consumption to immigrant populations who may eat uncommon seafood species as well as culturally-specific fish parts and preparations. Furthermore, these populations may have elevated levels of arsenic and cadmium due to higher consumption of foods such as rice, vegetables and organ meats or use of imported consumer products.
This workshop will explore the development of fish consumption advisories for immigrant Asian populations that are based on assessment of culturally-relevant dietary practices. Researchers and public health practitioners will discuss modalities for gathering data on fish consumption through focus groups, developing surveys to capture culturally-specific fish consumption, participant recruitment methodologies, influences of dietary and cultural acculturation, and creating targeted, culturally-sensitive educational materials. Presentations will include examples from investigations of Asian populations, including Burmese, Vietnamese, Korean, and Chinese immigrants. We will conclude with an interactive conversation to discuss improving risk assessment and outreach, adapting methods to at risk populations in other locales, and future directions, including dissemination of methods and materials, and efficacy of educational interventions.
Introduction and New Developments in Mercury Isotope Geochemistry - 9:30-15:30
Jeroen Sonke, Martin Jiskra, Ryan Lepak, Sarah Janssen
Part one will provide a general introduction into Hg isotope geochemistry and is intended for participants new to the field. We will start with an introduction in Hg isotope measurements by multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS) and briefly discuss strategies for sample introduction and thallium mass bias correction of Hg isotope ratio measurements. We then will introduce the nomenclature of the five Hg isotope signatures currently available and discuss strategies for quality control of measurements. Finally, we will provide an overview of the most common protocols for Hg preparation, pre-concentration and matrix removal for isotopic measurements. We will also discuss challenges associated with measuring low Hg concentration environmental samples and provide examples of Hg stable isotope applications to address emerging questions in mercury science.
Part 2: New developments in Hg stable isotope Geochemistry
Part two is open to all researchers interested in Hg stable isotope research. It will highlight methodological advances required to address analytical challenges in the ever-expanding field of Hg isotope research. This section will be comprised of multiple brief presentations (15-20 minutes) which include the identification of a research need, technical advancements addressing it, and the application of the method. Such talks will be given by experts in the field that have a diverse set of research interests and methodological needs. This section will focus on the development and application of tools to measure Hg isotopes in air, water, and lower food webs as well as compound specific techniques for methylmercury.
Part 3: Round Table
Part three will be a round table discussion for all researchers interested in advancing metrology and research strategy of Hg isotope research. Here, the cumulative attendance of invited speakers, workshop organizers, career Hg researchers and new Hg researchers will participate in discussions with the central theme: “What are the needs of the Hg research community and how can Hg isotope techniques aid in answering research gaps?”. Topic examples might include: quality assurance and quality control measures for challenging matrices, and shortcomings in our current methods. A focus will also be put on Hg isotope applications to microbiology, ecology, geochronology, and atmospheric science. The topic on how to translate Hg isotope research for non-isotope audiences and policy decision makers will also be discussed.
Latest Advances in Wildlife Monitoring – 13:00-15:30
Laurie Chan and David Evers and/or Oksana Lane
What is being done by the experts. Advances wildlife monitoringThere are ongoing biomonitoring programs in the Arctic (AMAP 2011), EU, Canada, USA, Japan and other regions. To our knowledge, not much work is happening in the developing countries, in Russia and the countries of the former USSR, primarily because of lack of funding. BRI has been conducting biomonitoring in North America with Common Loons and songbirds using nonlethal sampling methods (NYSERDA projects, point source work). Luis Fernandez et al. are conducting biomonitoring work with fish in ASGM regions in Peru, and there is some work done with birds/small mammals in Colombia, just to name a few.
Wildlife monitoring discussion
What are you doing where and how is it going? Troubleshooting and brainstorming best practicesIn this workshop we will discuss topics such as: what taxa are best to include in the biomonitoring and work to identify target organisms: species by region and habitat.
Animals that feed at the top of the aquatic and terrestrial food webs should be preferred. Suggested taxa could include market, freshwater and marine fish, seabirds (many are declining)-collaborate w/ existing studies of populations to collect samples. Songbirds can be monitored/sampled in areas where fish are absent and in carefully selected target habitats that are likely to have higher rates of mercury methylation, such as wetlands and boggy sites at higher elevation, or sites near point source locations. Marine mammals and sea turtles are suitable targets for marine systems. Most of THg (85-95%) in tissues such as blood, fur, feathers and fish is in methyl form therefore a less expensive analysis for THg is sufficient. Invertebrates such as clams, crabs; spiders or others are easier and less expensive to collect but they require more costly MeHg analysis. We will discuss other metadata to collect to help interpret and explain Hg results. Other topics for discussion can include: the preferred tissue types, collection methods-nonlethal methods are preferred, because many populations (birds, mammals, turtles) are declining already, time of year to sample: weather, temperature can affect Hg availability, existing and future databases: sharing data. Another important topic is the biomarkers; Laurie Chan will review the current knowledge of the relationships between mercury concentrations in biomarkers and organ tissues in wildlife, discuss the approaches of using biomarkers for risk assessment for adverse effects in wildlife and present examples for using wildlife biomarkers to identify mercury hotspots.
Rtęć w atmosferze i biosferze - zmiany przestrzenne i czasowe na obszarze Polski
Modeling the Global Mercury Cycle for Beginners – 9:30-13:00
Colin Thackray & Ben Geyman (Harvard University)
- elucidate mercury biogeochemical cycling
- generate physically consistent budgets for mercury fluxes between environmental media
- propagate emissions inventories (historical and future projections) and their uncertainties to environmental concentrations through time.
Passive sampling for mercury: passive sampling theory and current state of the science - 9:30-12:00
David McLagan, Antonella Macagnano
The workshop will begin with a general introduction into passive sampling theory and the specific requirements for mercury passive sampling, which we are well aware exhibits a unique set of physicochemical properties. This will include a definition of the key terms and processes involved in passive sampling, methods of determining sampling rates and uptake rates (two different parameters), and passive sampler design: uptake mechanism and sampler components. While the focus of this workshop in general will be on passive air sampling due to the much greater coverage on this form of sampling in the literature, passive sampling in aquatic environments will also be addressed. This introduction will provide a basis for the subsequent sections of the workshop and introduce these methods to participants new to the field. (Approximate time: 45 mins).
Part 2: Existing and developing passive samplers for environmental mercury monitoring.
The second part of the workshop will be open to participants and researchers to provide insight into passive samplers for environmental mercury monitoring, both existing instruments and designs still in development. This section will include a series of short presentations (≈15 mins each) by researchers involved in these passive systems and will describe the specific Hg species of interest, the matrix in which the sampler measures, sampler design and features, sampling rate and measurement uncertainties, and an outline of its applications. Presenters are encouraged to highlight difficulties that they have encountered during the development of their passive samplers as this information is likely to drive the most significant advancements in future research is this field. (Approximate time: 75 mins)
Part 3: Open discussion forum: strengths, limitations, and future research directions of mercury passive sampling.
The workshop will conclude with an open discussion that will focus on (i) describing and overcoming some of the difficulties faced by mercury passive sampling, (ii) summarising any additional benefits these unique sampling methodologies, and finally (iii) outlining possible novel applications and direction of future research. This discussion will be preceded by questions and answers on any topics raised during Part 1 and Part 2 of the workshop. (Approximate time: 30-45 mins)
Perspectives on Methylmercury Demethylation in Natural Environments - 13:00-15:30
Sofi Jonsson, David Amouroux
Current Knowledge Gaps and Future AdvancesThe balance between mercury (Hg) methylation and methylmercury (MeHg) demethylation processes controls net production of MeHg in natural environments. Identifying processes and quantifying rates for Hg methylation and MeHg demethylation processes in natural environments remains a challenge. So far, most efforts have been focused on the methylation processes, even though a detailed understanding of demethylation processes are equally important and could serve as the basis for the development of new tailored remediation strategies.
With this workshop, we want to shed light on current knowledge gaps on MeHg demethylation processes and on state-of-art techniques that could enable to advance our current understanding of such processes. We aim at gathering researchers with experiences in studying demethylation processes and in relevant state-of-the art techniques (such as genetical-, metabolomical- and isotopical- approaches, synchrotron-based speciation methods and imaging techniques). To inspire the discussion, we will start the workshop by presenting an overview which will be followed by shorter presentations where relevant aspects/techniques are presented. It is our hope that the workshop will be a platform for generation of novel ideas and new collaborations.