Workshop in ICGMP2019 - Workshop on Passive sampling for mercury: passive sampling theory and current state of the science

Workshop Leading and organization: Part 1: General Introduction into passive sampling with an emphasis on mercury. 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