Table 1 Fitting parameters.

From: In-situ measurements of rare earth elements in deep sea sediments using nuclear methods

Lu2O3 (mg/ppm) a (background) b (Lu) c (U) d (Th) Measuring Time (h)
0 0.930 ± 0.003 0 ± 0.0005 0.060 ± 0.002 0.0069 ± 0.0002 60
0.41/2.56 0.926 ± 0.002 0.0016 ± 0.0004 0.06 ± 0.015 0.0071 ± 0.0001 131
1.18/7.37 0.921 ± 0.003 0.0029 ± 0.0005 0.066 ± 0.002 0.0070 ± 0.0002 62.5
3.42/21.37 0.909 ± 0.005 0.006 ± 0.001 0.073 ± 0.004 0.0065 ± 0.0004 20
5.44/34 0.914 ± 0.005 0.01 ± 0.001 0.062 ± 0.004 0.0067 ± 0.0004 17
6.62/41.37 0.897 ± 0.0045 0.013 ± 0.001 0.079 ± 0.004 0.0063 ± 0.0004 23
20/125 0.884 ± 0.004 0.043 ± 0.001 0.062 ± 0.0035 0.0059 ± 0.0003 24