Table T15. Precision and accuracy of inductively coupled plasma-atomic emission spectrometry analyses on the JY-2000, Leg 206.
Standard:
AII-92-29-1
BAS-140
BAS-148
BIR-1
BOB-1
JA-1
Average for all runs
n = 3
Precision (%)
Published value
n = 2
Precision (%)
Published value*
n = 5
Precision (%)
Published value†
n = 3
Precision (%)
Published value‡
n = 3
Precision (%)
Published value‡
n = 3
Precision (%)
Published value‡
Major element (wt%):
SiO2 48.31 2.4 49.39 51.06 1.1 50.28 49.03 2.1 49.31 48.35 1.5 47.15 50.83 0.6 50.48 64.20 1.4 64.10
Al2O3 15.97 0.5 15.30 14.29 0.6 14.57 15.65 1.8 15.59 15.33 1.8 15.15 16.23 1.6 16.57 14.72 2.4 14.99
TiO2 1.79 2.4 1.73 1.02 0.4 0.99 0.90 5.2 0.90 0.96 2.6 0.95 1.29 5.2 1.27 0.82 2.1 0.87
Fe2O3 10.95 5.3 10.72 10.73 0.2 11.17 10.26 8.2 9.96 10.92 8.6 11.11 8.82 4.7 8.48 7.84 15.9 6.95
MgO 7.66 3.1 7.32 8.27 0.0 8.13 8.66 8.6 8.61 9.39 5.1 9.56 7.44 4.3 7.69 1.77 3.7 1.61
MnO 0.17 2.9 0.18 0.17 1.7 0.18 0.16 7.0 0.17 0.15 6.8 0.17 0.13 0.2 0.13 0.14 1.6 0.15
CaO 11.41 2.0 11.02 12.53 3.5 12.47 12.93 2.7 12.80 13.06 2.4 13.07 11.36 1.6 11.07 5.70 1.9 5.68
Na2O 3.31 2.2 3.03 1.78 0.6 1.70 2.17 4.2 1.97 1.70 3.9 1.73 3.26 4.8 3.06 3.80 0.5 3.86
K2O 0.18 3.4 0.17 0.00 141.4 NR 0.09 60.0 0.02 0.01 24.9 0.03 0.39 1.3 0.36 0.76 5.4 0.78
P2O3 0.17 41.5 0.16 0.06 141.4 0.08 0.05 111.3 0.07 0.02 173.2 0.05 0.15 49.4 0.16 0.17 15.7 0.16
Trace element (ppm):
Cr 255.6 6.7 233.1 205.7 1.9 191.5 431.3 27.2 343.7 395.1 2.9 377.1 282.6 4.6 236.6 6.9 3.5 7.3
Ni 125.0 1.7 101.8 110.8 13.4 80.8 135.3 14.9 109.5 210.4 5.3 163.9 115.4 15.8 104.5 0.0 BDL 1.8
V 329.3 12.7 300.3 327.9 3.2 NR 290.9 3.7 NR 303.8 4.2 309.0 253.5 15.8 NR 121.8 7.6 105.1
Sc 40.1 16.5 30.7 40.7 4.5 43.9 44.2 4.0 NR 39.0 8.4 43.4 32.6 13.7 NR 32.5 16.7 28.4
Ba 10.7 85.2 NR 7.5 71.3 NR 6.2 63.7 NR 7.9 98.3 6.9 42.4 4.1 57.2 309.6 5.7 307.2
Sr 143.9 1.6 131.4 57.1 1.7 46.9 78.9 5.1 62.8 112.7 0.7 106.6 208.3 4.9 196.2 254.0 0.7 266.2
Y 35.9 2.0 42.5 26.8 4.4 29.9 25.8 1.4 28.1 16.2 3.4 15.8 26.9 6.6 26.6 28.3 9.8 30.6
Zr 123.3 4.5 133.4 48.4 8.9 48.9 48.6 12.4 48.3 22.3 11.7 15.3 102.2 5.1 100.6 85.9 4.6 88.4
Nb 6.6 6.0 NR 0.0 BDL NR 0.1 222.3 1.5 0.0 BDL 0.6 1.7 9.1 4.9 0.0 BDL 1.7
 
Standard:
JP-1
Average for all runs
n = 3
Precision (%)
Published value
Major element (wt%):
SiO2 44.55 2.4 41.45
Al2O3 3.16 2.0 0.61
TiO2 0.01 7.0 NR
Fe2O3 8.18 7.8 8.16
MgO 42.72 3.5 43.73
MnO 0.12 6.5 0.12
CaO 0.84 1.4 0.55
Na20 0.00 BDL 0.02
K2O 0.00 112.6 0.00
P2O3 0.00 89.6 NR
Trace element (ppm):
Cr 2978.4 5.7 2904.2
Ni 2779.9 1.3 2405.5
V 33.4 5.9 28.4
Sc 13.3 2.7 6.9
Ba 13.4 30.8 16.6
Sr 16.0 1.3 NR
Y 4.5 18.0 NR
Zr 14.7 28.1 6.2
Nb 0.0 BDL 1.2

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. BDL = below detection limit; NR = not reported. For elements with near background concentrations, the precision is artificially high (i.e., the actual precision is much better than suggested by the numbers). All values have been normalized to 100% volatile free. * = Sparks and Zuleger (1995), † = Bach et al. (1996), ‡ = following Govindarasu (1994). This table is also available in ASCII.