SRM

GSS-1

Element

Certified

Calculated

Average

St Dev (2 sigma)

Rel St Dev (%)

K (%)

2.15

2.156

0.156

7.2

Ca (%)

1.229

1.181

0.094

8.0

Ti (%)

0.485

0.462

0.035

7.7

Fe (%)

3.63

3.675

0.191

5.2

V

86

102.7

36.3

35.4

Cr

62

66.7

17.9

26.8

Mn

1781

1750.7

115.6

6.6

Ni

20.4

23.4

6.4

27.5

Cu

21

24.5

6.6

27.0

Zn

680

672.8

43.3

6.4

Ga

19.3

17.8

2.6

14.6

As

33.5

32.7

6.2

19.1

Rb

140

143.7

8.8

6.1

Sr

155

162.7

10.0

6.2

Y

25

25.8

2.4

9.5

Zr

245

244.4

19.0

7.8

Pb

98

108.9

11.1

10.2

Th

11.6

11.2

2.1

18.4

Ba

590

585.5

35.9

6.1

La

34

30.4

5.4

17.9

Ce

70

67.1

5.1

7.7

Nd

28

27.9

3.5

12.7