Decreasing of the industrial lead contamination in the Amundsen Sea area

Science Highlights

7 July 2016

Since the phasing-out of leaded automobile gasoline, the imprint of industrial lead is decreasing everywhere. Antarctica snow and ice are no exception to this general rule, as shown by measurements of lead (Pb) concentration and isotopic composition in these environments as well as in the Amundsen Sea Polynya. Up to 95% of the Pb at the time of sampling is natural in source, allowing tracing weathering from Antarctic rocks….

Photo: Silke Severmann, Rutgers University.

Reference:

Ndungu, K., Zurbrick, C. M., Stammerjohn, S., Severmann, S., Sherrell, R. M., & Flegal, A. R. (2016). Lead Sources to the Amundsen Sea, West Antarctica. Environmental Science & Technology, 50(12), 6233–6239. doi:10.1021/acs.est.5b05151

Latest highlights

Constraining aerosol deposition over the global ocean by the cosmogenic beryllium-7

He and co-workers propose a global estimate of aerosol deposition onto the ocean using the cosmogenic radionuclide beryllium-7

Oceanic lead concentrations and isotopes mapped using explainable machine learning

Using three machine learning models, Olivelli and her colleagues generated global climatologies of lead concentrations and isotopes…

Dissolved nickel sources: transformation and sinks in the Arabian Sea

Malla and co-authors present an extensive study of the distribution of dissolved nickel in the Arabian Sea.

Linking cadmium cycling to phosphate dynamics in the Indian Ocean: Evidence from GEOTRACES transects

Mishra and Singh determined cadmium and phosphate concentrations along 34 complete vertical profiles in the Indian Ocean.

Rechercher