An important pathway for CO2 sinking in the ocean is via “biological pump”, driven by production of particulate organic carbon (POC) surface and its subsequent export to deeper vertical settling. Here we examine fluxes POC continental slope northern Gulf Mexico utilizing short-lived radionuclide pair 210Po - 210Pb. The total activities 210Pb ranged from 2.5 ± 0.35 16.52 1.98 dpm 100 L-1 3.47 0....

Accumulatlon of polonium In the common prawn Palaemon serratus and the sea perch Serranus scnba was studied expenmentally to clanfy the relative Importance of water and food as sources of the hlgh 210Po concentrations usually found in marlne organisms A double-tracer technlque was used whlch enables dlfferentlating the bioaccun~ulation of PO dissolved in seawater (as 210Po) and the dlgestlve tr...

The accurate determination of the levels 210Pb in environmental samples (e.g. atmospheric aerosols, waters, soils, biota, etc.) is essential due to its multiple applications geochronology, radiation protection, groundwaters flows, air masses movement, etc. For this purpose, it has been developed a novel and thorough study three alternative radiometric measuring methods activity concentrations s...