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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: Anal Methods. 2017 Jun 26;9(29):4267–4274. doi: 10.1039/C7AY01111C

Figure 5.

Figure 5

A cation exchange chromatogram of gradient elution of kelp extract for LC-ICP-MS measurements. Inset A and B shows the expanded view near the retention time of AsIII and AB, respectively. The red traces in the insets show the chromatogram of the kelp extract spiked with 2.5 ng g−1 AsIII and 2.5 ng g−1 AB.