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Table 1 Composition of icemelt and sediment from Antarctic icebergs and glaciers.

From: Bioavailable iron in the Southern Ocean: the significance of the iceberg conveyor belt

Sample Icemelt % Fe extracted from Sediment
Icebergs Dissolved Fe (nM) Ascorbate (%FeA) Dithionite (%FeD)
S1 (Duplicates)   0.104 0.038 0.88 0.67
Mean 0.65 0.071 0.78
S2 0.16 0.195 0.86
S3 N/A 0.357 1.20
S4 (Duplicates)   0.19 0.104 0.95 0.66
Mean 0.30 0.15 0.81
KG1 (Duplicates)   0.071 0.042 0.33 0.27
Mean 2.2 0.057 0.30
KG2 (Duplicates)   0.057 0.059 0.42 0.84
Mean 0.13 0.058 0.63
Iceberg Mean 0.69 ± 0.87 0.15 ± 0.12 0.76 ± 0.29
Glaciers    
T1 0.05 0.029 0.14
T2 0.09 0.020 0.10
T3 3.8 0.029 0.10
C1 2.0 0.023 0.27
Glacier Mean 1.5 ± 1.8 0.023 ± 0.004 0.15 ± 0.05
Iceberg+Glacier Mean 1.0 ± 1.3 0.10 ± 0.11 0.52 ± 0.39
  1. N/A Not available.