NIST2709a and IAEA-155 SRMs

U of K

Assigned

El

n

X_Lab ± Unc Lab.

LD

X_cert ± Unc.

Bias

Zeta

E_n

(k = 1)

%

score

(k = 2)

Cl

IAEA-155

13

71,369 ± 2862

5848

69,200 ± 5163

3.13

0.37

0.2

K

NIST2709a

8

23,381 ± 1163

2571

21,100 ± 300

10.8

1.90

0.95

IAEA-155

13

41,914 ± 1229

41,700 ± 16,327

0.51

0.01

0.01

Ca

NIST2709a

8

19,673 ± 1452

937

19,100 ± 450

3.00

0.38

0.19

IAEA-155

13

41,632 ± 1229

42,100 ± 5163

−1.11

0.09

0.04

Ti

NIST2709a

8

3637 ± 162

314

3360 ± 35

8.3

1.68

0.84

Mn

NIST2709a

8

486 ± 36

106

529 ± 9.0

−8.1

−1.17

0.58

Fe

NIST2709a

8

34,005 ± 892

42

33,600 ± 350

1.20

0.42

0.21

IAEA-155

13

67 ± 13

62 ± 36

7.8

0.13

0.07

Ni

NIST2709a

8

78.4 ± 6.7

*

85 ± 1.0

−7.8

−0.98

0.49

Zn

NIST2709a

8

111 ± 6

7.9

103 ± 2.0

7.34

1.23

0.62

IAEA-155

13

35 ± 2

34.3 ± 5.2

1.91

−6.03

0.06

Rb

NIST2709a

8

100 ± 8

2.2

99 ± 1.5

1.17

0.14

0.07

IAEA-155

13

38 ± 1

39.2 ± 6.1

−4.34

−6.34

0.14

Br

IAEA-155

13

39 ± 1

2.1

39.1 ± 8

−1.63

−4.58

0.04

Sr

NIST2709a

8

239 ± 6.5

1.7

239 ± 30

0.04

0.003

0.002

IAEA-155

13

11 ± 0.6

10.5 ± 5

5.84

0.122

0.061

Th

NIST2709a

8

8.9 ± 0.7

2.6

10.9 ± 0.1

−19

−2.83

1.41

Zr

NIST2709a

8

140 ± 10.2

1.5

195 ± 23

−28

−2.19

1.10