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Table T12. Precision and accuracy of inductively coupled plasma–atomic emission spectrometry analyses on the JY-2000, Expedition 301.

Run: 1 1 2 2 3 3 4 4 5 5 6 6 7 Average
(N = 13) 		Standard
deviation		 Precision
(%)		 Published
value†
BAS 148
















Major element oxides (wt%):














SiO2 49.59 49.76 49.63 48.37 49.82 49.07 48.68 49.16 50.29 49.55 48.52 48.07 49.77 49.25 0.67 1.4 49.31
Al2O3 15.52 15.71 15.29 15.25 15.27 15.61 15.47 15.45 15.23 15.23 15.70 15.66 15.59 15.46 0.19 1.2 15.59
TiO2 0.95 0.96 0.89 0.89 0.89 0.89 0.88 0.93 0.91 0.89 0.87 0.90 0.89 0.90 0.03 3.2 0.90
Fe2O3 9.89 9.60 9.64 9.44 9.74 9.87 9.72 9.93 9.77 9.67 9.96 10.05 9.80 9.78 0.17 1.7 9.96
MgO 8.40 8.02 8.42 8.66 8.72 8.58 8.81 8.93 8.49 8.52 8.77 8.24 8.53 8.54 0.24 2.9 8.61
MnO 0.18 0.17 0.17 0.17 0.15 0.15 0.19 0.20 0.19 0.20 0.19 0.18 0.18 0.18 0.02 9.4 0.17
CaO 12.50 13.06 12.80 12.69 13.05 12.69 12.21 12.49 12.44 12.64 12.73 13.05 12.72 12.70 0.26 2.0 12.80
Na2O 1.99 2.04 2.01 1.99 2.05 2.06 1.97 1.99 2.02 1.95 2.04 2.02 1.98 2.01 0.03 1.6 1.97
K2O 0.04 0.06 0.04 0.04 0.04 0.05 –0.02 0.01 0.04 0.06 0.04 0.04 0.04 0.04 0.01 30.5 0.02
P2O5 0.07 0.05 0.06 0.07 0.07 0.08 0.06 0.14 0.06 0.06 0.11 0.07 0.09 0.08 0.02 31.4 0.07
Total 99.13 99.42 98.95 97.58 99.80 99.04 97.95 99.22 99.43 98.76 98.93 98.29 99.59 98.94

99.40
Trace elements (ppm):














Cr 416 350 383 394 418 406 397 427 390 390 361 395 388 393 21.5 5 344
Ni 88 54 172 103 128 88 109 126 86 91 161 108 172 114 36.1 32 110
V 259 273 294 285 274 285 272 288 277 285 289 291 275 281 9.7 3 NR
Sc 44 43 43 42 42 43 43 60 36 39 42 50 44 44 5.6 13 NR
Ba 10 –7 12 12 12 12 –10 –9 11 22 14 29 12 15 6.1 42 NR
Sr 58 57 65 66 67 68 62 67 67 66 67 67 63 65 3.6 6 63
Y 24 23 28 28 29 27 29 32 29 26 26 24 31 27 2.8 10 28
Zr 48 42 45 48 48 45 43 37 48 48 47 49 49 46 3.4 7 48
Nb 0.5 0.4 2.8 2.8 2.8 2.8 2.6 2.8 2.7 2.6 2.7 2.9 2.3 2.4 0.9 36 1.50
BAS 206
















Major element oxides (wt%):














SiO2 49.21 52.60 47.24 48.67 48.77 49.20 47.78 49.72 48.59 48.84 48.92 48.91 49.21 49.05 1.24 2.5 49.53
Al2O3 14.21 14.49 13.80 13.60 13.63 13.86 13.66 13.87 13.82 13.95 13.92 14.06 14.04 13.92 0.25 1.8 14.22
TiO2 2.08 2.21 2.04 2.07 2.11 2.11 2.06 2.23 2.02 2.04 2.00 2.09 2.06 2.09 0.07 3.3 2.04
Fe2O3 14.83 14.95 13.95 13.87 14.29 14.61 14.80 14.71 14.43 14.35 15.19 14.98 13.35 14.49 0.52 3.6 14.30
MgO 6.81 7.06 6.86 6.70 6.73 6.93 6.55 7.11 6.97 6.28 6.76 7.63 6.51 6.84 0.33 4.8 6.77
MnO 0.26 0.29 0.27 0.27 0.23 0.23 0.31 0.33 0.33 0.30 0.30 0.33 0.27 0.29 0.03 12.2 0.22
CaO 9.75 10.26 9.65 9.58 9.72 9.54 9.51 9.43 9.51 9.82 9.61 9.30 9.75 9.65 0.23 2.4 9.70
Na2O 2.85 3.00 2.72 2.66 2.72 2.68 2.75 2.75 2.70 2.70 2.78 2.68 2.67 2.74 0.09 3.4 2.78
K2O 0.17 0.22 0.17 0.18 0.16 0.17 0.13 0.17 0.16 0.17 0.17 0.18 0.18 0.17 0.02 12.1 0.18
P2O5 0.20 0.18 0.19 0.19 0.17 0.20 0.19 0.29 0.18 0.14 0.20 0.16 0.16 0.19 0.03 17.8 0.16
Total 100.37 105.27 96.89 97.80 98.52 99.51 97.74 100.61 98.69 98.58 99.85 100.31 98.21 99.41

99.90
Trace elements (ppm):














Cr 111 99 88 87 83 90 96 123 88 90 90 151 102 100 19.1 19.2 84
Ni 41 43 41 48 69 78 48 59 85 44 63 –15 107 60 21.1 34.9 54
V 444 476 463 464 468 457 444 457 453 431 439 455 452 454 12.3 2.7 461
Sc 46 51 47 46 46 47 49 55 45 42 49 61 50 49 5.0 10.2 47
Ba 35 38 52 53 52 53 34 32 55 64 60 63 49 49 11.1 22.5 50
Sr 97 101 109 106 107 109 107 107 109 109 108 106 106 106 3.6 3.3 112
Y 53 54 51 51 55 58 59 64 52 48 49 61 64 55 5.5 9.9 44
Zr 129 132 134 129 132 133 135 128 134 133 131 130 134 132 2.2 1.7 127
Nb 11.3 11.8 9.6 9.5 9.8 9.9 9.6 9.4 10.0 10.0 10.3 10.2 11.4 10.2 0.8 7.6 5.1

Notes: Standards analyzed as a check on precision and accuracy. Precision is calculated as the standard deviation of N analyses divided by the average value (values in bold were excluded from statistical calculations). For elements with near background concentrations, the analytical error is artificially high (i.e., the actual precision is much better than suggested by the numbers). † = Bach et al. (1996) and Shipboard Scientific Party (2003a). BAS 148 = basalt standard created during ODP Leg 148, Hole 504B (Bach et al., 1996), BAS 206 = basalt interlaboratory standard created during ODP Leg 206 (Shipboard Scientific Party, 2003a). NR = not recovered.

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