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Progress in Earth and Planetary Science
Fig. 3 | Progress in Earth and Planetary Science

Fig. 3

From: Improvements in the determination of attogram-sized 231Pa in dissolved and particulate fractions of seawater via multi-collector inductively coupled plasma mass spectrometry

Fig. 3

Replicate measurements of the dissolved seawater sample from the Arctic and the two particulate fractions filtered from the seawater collected from the Pacific: a concentration of 231Pa per gram of dissolved seawater; b concentration of 231Pa in the small particles (0.8–51 μm); c concentration of 231Pa in the large particulate matter (> 51 μm). The blue color in the three panels indicates the actual measured concentration of 231Pa in the sample, and the red color indicates the corresponding measurement error or uncertainty

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