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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Microchem J. 2013 Mar 26;110:178–184. doi: 10.1016/j.microc.2013.03.012

Table 6.

Elemental concentrations (ng L−1) and recoveries (R) for REEs from analysis of estuarine water and coastal seawater samples. Values are given as average ± standard deviation for given four replicate analyses

Element Estuarine water Coastal seawater
Found Added Total found R (%) Found Added Total found R (%)
Ce 278 ± 21 200 471 ± 16 97 17.8 ± 0.3 20 38.8 ± 0.8 105
Pr 80.3 ± 1.2 100 183 ± 8.2 103 4.26 ± 0.22 10 14.1 ± 0.52 96
Nd 156 ± 5 100 248 ± 12 95 14.3 ± 0.6 10 23.4 ± 1.1 94
Sm 91.7 ± 2.5 100 185 ± 4 93 3.78 ± 0.14 10 13.9 ± 0.23 103
Eu 21.2 ± 1.3 20 41.7 ± 1.1 102 1.09 ± 0.03 2 3.01 ± 0.07 93
Gd 81.2 ± 3.9 100 176 ± 4 94 3.91 ± 0.21 10 13.6 ± 0.32 92
Tb 9.5 ± 0.4 20 30.0 ± 1.6 105 0.82 ± 0.01 2 2.76 ± 0.08 93
Dy 37.9 ± 1.5 40 78.3 ± 4.1 101 3.32 ± 0.11 10 13.1 ± 0.21 93
Ho 10.3 ± 0.4 20 29.6 ± 1.1 91 0.96 ± 0.06 2 2.91 ± 0.17 95
Er 20.1 ± 1.0 20 39.8 ± 1.3 98 2.82 ± 0.12 2 4.95 ± 0.16 105
Tm 4.61 ± 0.08 10 14.4 ± 0.14 95 0.72 ± 0.02 2 2.68 ± 0.04 94
Yb 18.7 ± 1.3 20 38.9 ± 0.9 101 2.08 ± 0.08 2 4.04 ± 0.05 98
Lu 4.32 ± 0.11 10 14.1 ± 0.14 95 1.23 ± 0.04 2 3.15 ± 0.03 93