In this study, we utilized the same resin as in Lohan et al.’s
method, but modified the method by using (1) isotope dilution
to avoid recovery efficiency and sensitivity issues and (2) offline
batch extraction from 100 to 2400 resin beads to keep blanks low
and improve ICPMS throughput. This method requires relatively little
analyst time and minimal volume of sample (only 1.3–1.5 mL),
which is beneficial under circumstances when sample volume is
limited. In addition, the use of small amounts of resin lowers the
Fe procedural blank in particular by reducing the Fe released from
the NTA resin (see Section 3.2). With this method we were able
to analyze dissolved Cu, Cd, Pb, and Fe in seawater samples to
demonstrate oceanographically consistent profiles near Bermuda.
In this study, we utilized the same resin as in Lohan et al.’s
method, but modified the method by using (1) isotope dilution
to avoid recovery efficiency and sensitivity issues and (2) offline
batch extraction from 100 to 2400 resin beads to keep blanks low
and improve ICPMS throughput. This method requires relatively little
analyst time and minimal volume of sample (only 1.3–1.5 mL),
which is beneficial under circumstances when sample volume is
limited. In addition, the use of small amounts of resin lowers the
Fe procedural blank in particular by reducing the Fe released from
the NTA resin (see Section 3.2). With this method we were able
to analyze dissolved Cu, Cd, Pb, and Fe in seawater samples to
demonstrate oceanographically consistent profiles near Bermuda.
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