Accepted Values¹

Our results

Isotope

uncer.

Average

Precision

Accuracy

Z

Element

measured

(1s)

(n = 15)

(RSD)

(Deviation from

accepted value)

(ppm)

(ppm)

(ppm)

21

Scandium

⁴⁵Sc

      31.8

        1.3

      31.9

1.1%

0.4%

23

Vanadium

⁵¹V

    317

      12

    318

2.4%

0.4%

24

Chromium

⁵²Cr

    289

      22

    289

2.7%

0.1%

27

Cobalt

⁵⁹Co

      45

        2

      45.4

1.3%

0.9%

28

Nickel

⁶⁰Ni

    121

        2

    121

3.2%

-0.1%

30

Zinc

⁶⁸Zn

    105

        5

      96.3

1.7%

-8.3%

37

Rubidium

⁸⁵Rb

        9.25

        2

        9.40

2.9%

1.7%

38

Strontium

⁸⁸Sr

    403

      25

    408

1.7%

1.2%

39

Yttrium

⁸⁹Y

      27.6

        1.7

      28.2

1.5%

2.2%

40

Zirconium

⁹⁰Zr

    179

      21

    175

6.3%

-2.0%

41

Niobium

⁹³Nb

      19

        2

      18.7

3.1%

-1.8%

56

Barium

¹³⁸Ba

    139

      14

    131

10.3%

-6.0%

57

Lanthanum

¹³⁹La

      15.8

        1.3

      15.5

2.3%

-1.8%

58

Cerium

¹⁴⁰Ce

      39

        4

      38.8

2.3%

-0.5%

59

Praseodymium

¹⁴¹Pr

        5.7

        0.4

        5.50

2.4%

-3.4%

60

Neodymium

¹⁴⁶Nd

      25

        2

      25.3

2.4%

1.1%

62

Samarium

¹⁴⁷Sm

        6.2

        0.3

        6.22

2.7%

0.2%

63

Europium

¹⁵¹Eu

        2.06

        0.08

        2.07

1.7%

0.3%

64

Gadolinium

¹⁵⁷Gd

        6.4

        0.5

        6.20

1.9%

-3.1%

65

Terbium

¹⁵⁹Tb

        0.96

        0.08

        0.952

2.4%

-0.8%

66

Dysprosium

¹⁶³Dy

        5.2

        0.3

        5.43

2.6%

4.4%

67

Holmium

¹⁶⁵Ho

        0.99

        0.08

        0.990

2.6%

0.0%

68

Erbium

¹⁶⁷Er

        2.4

        0.2

        2.51

2.7%

4.4%

69

Thulium

¹⁶⁹Tm

        0.33

        0.04

        0.336

3.0%

1.8%

70

Ytterbium

¹⁷⁴Yb

        2.02

        0.2

        2.01

3.1%

-0.6%

71

Lutetium

¹⁷⁵Lu

        0.291

        0.026

        0.278

3.7%

-4.5%

72

Hafnium

¹⁷⁸Hf

        4.38

        0.22

        4.40

3.8%

0.3%

73

Tantalum

¹⁸¹Ta

        1.23

        0.13

        1.20

6.7%

-2.2%

74

Tungsten

¹⁸⁴W

        0.27

        0.06

        0.275

7.9%

1.8%

82

Lead

²⁰⁸Pb

        2.6

        0.9

        2.31

17.2%

-11.1%

90

Thorium

²³²Th

        1.08

        0.15

        1.20

5.6%

10.7%

92

Uranium

²³⁸U

        0.42

        0.06

        0.419

4.1%

-0.2%