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Molybdenum as a tracer to anthropogenic activity
conference contribution
posted on 2023-05-24, 13:53 authored by Tennant, A, Lane, S, Bernadette ProemseBernadette Proemse, Wieser, MThe trace metal molybdenum (Mo) is not very abundant in the environment, but has numerous applications in anthropogenic activities. For instance, Mo sulphide (MoS2) is a component of diesel fuel. Mo is used as a catalyst in many engines and is believed to be the most efficient catalyst for the hydro-cracking of bitumen, and has even been found in the emissions of coal-fired power plants. Hence, anthropogenic activities may release Mo in larger amounts to the environment that may affect terrestrial and aquatic ecosystems (e.g. via its coupling with the N cycle). We have therefore investigated the potential of Mo concentration and isotopic abundances as a tracer of androgenic emissions. Using a method of elemental double spiking, we measured Mo concentrations and isotopic composition of aerosols throughout the city of Calgary, Alberta, Canada. Airborne Mo was collected at several locations, ranging from an isolated weather station to a busy bus garage where buses were left to idle for extended periods of time. Mo concentrations ranged from 0.07 ng/m3 in the laboratory 19.0 ng/m3 in the bus garage. The isotopic compositions were variable from throughout the sampling sites. These results suggest that Mo has the potential to be used as a tracer of anthropogenic activity.
History
Publication title
15th Annual Meeting of the Northwest Section of the American Physical SocietyDepartment/School
School of Natural SciencesEvent title
15th Annual Meeting of the Northwest Section of the American Physical SocietyEvent Venue
Seattle, USADate of Event (Start Date)
2014-05-01Date of Event (End Date)
2014-05-03Repository Status
- Restricted