Fast copper speciation screenings with solid-phase extraction cartridges using high-specific activity 64 Cu

摘要: Solid-phase extraction (SPE) cartridges with different functional groups(chelating, ion-exchange, hydrophobic) may be useful for copper speciationdeterminations of aqueous samples. Provided that each cartridge selectivelyextracts one species or a group species, fast screening speciationcan achieved by performing series extractions SPE cartridgesand combining the results. For this purpose, performance five cartridgeswas studied respect to selectivity using samples knowncomposition. Samples were spiked high-specific 64 Cu radiotracer toachieve easy detection extracted species. Its high radioactivityper unit mass ensures preservation initial chemical equilibria and compositionof sample. Results show secondary interactions take place onthe extracting phase when relatively clean are analyzed. Two naturalwater samples, viz. ditch water seawater sample, exposed aseries as well. Species distributions found these samplesgenerally correspond expected distributions. Secondary maybe suppressed in cases, other metal compete interactions.