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Table T8. Mean values for reference interstitial water samples and IAPSO seawater. (See table notes.)

Sample Value Li+
(µM)		 B
(µM)		 Mg2+
(mM)		 H4SiO4
(µM)		 K+
(mM)		 Ca2+
(mM)		 Mn2+
(µM)		 Fe2+
(µM)		 Sr2+
(µM)		 Ba2+
(µM)
320-U1336B-2H-5 Expedition 320 value 23.2 440 49.0 325 ND 10.6 BD BD 93.8 BD
Expedition 321 mean (N = 3) 23.3 450 ND 558 ND ND BD BD 103.5 BD
Standard deviation 0.35 41.6   15.0         0.70  
% RSD (1σ) 1.51 9.25   2.69         0.67  
320-U1336B-8H-3 Expedition 320 value 17.50 430.5 43.5 607 9.9 16.0 6.29 BD 177 BD
Expedition 321 mean (N = 3) 16.56 453.4 ND 767 ND ND 6.57 BD 208 BD
Standard deviation 0.45 10.1   16.0     0.58   10.2  
% RSD (1σ) 2.74 2.22   2.08     8.82   4.89  
320-U1336B-19H-3 Expedition 320 value 8.13 404.5 29.2 853 8.2 28.7 1.77 11.7 404 BD
Expedition 321 mean (N = 2) 7.35 403 ND 985 ND ND 1.98 11.6 462 BD
Standard deviation 0.31 81   0.355     0.16 0.38 9.23  
% RSD (1σ) 4.24 20   0.036     8.23 3.27 2.00  
IAPSO seawater Expedition 321 mean (N = 7) 26.4 439 55.1 37.9 10.4 11.0 BD BD 86.2 BD
Standard deviation 1.15 36.3 1.51 2.81 0.08 0.16     1.32  
% RSD (1σ) 4.34 8.27 2.75 7.42 0.82 1.50     1.53  

Notes: IAPSO = International Association for the Physical Sciences of the Ocean. RSD = relative standard deviation. ND = not determined, BD = below detection.

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