Temporal variations of antimicrobial resistance genes in aerosols: A one-year monitoring at the puy de Dôme summit (Central France).

The recent characterization of antibiotic resistance genes (ARGs) in clouds evidenced that the atmosphere actively partakes in the global spreading of antibiotic resistance worldwide. Indeed, the outdoor atmosphere continuously receives large quantities of particles of biological origins, emitted from both anthropogenic or natural sources at the near Earth's surface. Nonetheless, our understanding of the composition of the atmospheric resistome, especially at mid-altitude (i.

Over a decade of atmospheric mercury monitoring at Amsterdam Island in the French Southern and Antarctic Lands.

The Minamata Convention, a global and legally binding treaty that entered into force in 2017, aims to protect human health and the environment from harmful mercury (Hg) effects by reducing anthropogenic Hg emissions and environmental levels. The Conference of the Parties is to periodically evaluate the Convention's effectiveness, starting in 2023, using existing monitoring data and observed trends. Monitoring atmospheric Hg levels has been proposed as a key indicator.

What is the utility of measuring gaseous Hg dry deposition using Aerohead samplers?: A review.

The most efficient way to quantify Hg inputs to ecosystems is to measure wet and dry deposition. Wet deposition of Hg is determined by measuring Hg concentrations and the volume of precipitation. Dry deposition of Hg is determined through direct measurement and/or determined indirectly by measuring air concentrations and using model-generated deposition velocities.

Observations of the chemistry and concentrations of reactive Hg at locations with different ambient air chemistry.

The Hg research community needs methods to more accurately measure atmospheric Hg concentrations and chemistry. The Reactive Mercury Active System (RMAS) uses cation exchange, nylon, and PTFE membranes to determine reactive mercury (RM), gaseous oxidized mercury, and particulate-bound mercury (PBM) concentrations and chemistry. New data for Atlanta, Georgia (NRGT) demonstrated that particulate-bound Hg was dominant and the chemistry was primarily N and S Hg compounds.