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An automated sequential injection system incorporating a sample pretreatment module was developed for the separation and preconcentration of ultra-trace copper in seawater without dilution. Cu-PDC (pyrrolidine dithiocarbamate) chelate was retained in a PTFE-beads-packed column in the module, which was later eluted with a small amount of methanol, and the eluate was quantified using electrothermal...
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