School of Engineering and Science - Jacobs University

20
18
basalt
BHVO-2 (n=5)
run precision (%RSD)
16
14
12
10
8
6
4
2
0
20
18
Sc Ti Co Ni Rb Sr Y Zr Nb Mo Cs Ba La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Pb Th U
shales
SCo-1 (n=2)
SGR-1b (n=2)
run precision (%RSD)
16
14
12
10
8
6
4
2
0
20
18
Sc Ti Co Ni Rb Sr Y Zr Nb Mo Cs Ba La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Pb Th U
iron-formations
FER-2 (n=3)
IF-G (n=3)
run precision (%RSD)
16
14
12
10
8
6
4
2
run precision (%RSD)
0
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Sc Ti Co Ni Rb Sr Y Zr Nb Mo Cs Ba La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Pb Th U
dolomite
JDo-1 HCl (n=3)
JDo-1 HNO3 (n=3)
Sc Ti Co Ni Rb Sr Y Zr Nb Mo Cs Ba La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Pb Th U
Figure 7. Average run precision for multiple (n) sample decompositions of certified reference materials
that were analyzed repeatedly within a single ICPMS run (see text for details). All data for HF-HClO 4
sample decompositions, except for JDo-1 dolomite, which includes data for three carbonate (HNO 3 )
decompositions. Note bottom figure (dolomite) uses different scale. Poor RSD values are generally due
to element concentrations approaching the instrument quantification limit (e.g., Sc, see Fig. 4).
21