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

      32.6

        2.2

      31.4

2.0%

-3.6%

23

Vanadium

⁵¹V

    407

      34

    395

3.5%

-2.8%

27

Cobalt

⁵⁹Co

      37

        2

      36.9

1.4%

-0.3%

28

Nickel

⁶⁰Ni

      13

        4

      12.5

9.0%

-3.5%

30

Zinc

⁶⁸Zn

    129.5

        0.5

    127

2.6%

-1.7%

37

Rubidium

⁸⁵Rb

      47.2

        0.6

      45.3

3.0%

-4.0%

38

Strontium

⁸⁸Sr

    330

        5

    328

2.8%

-0.5%

39

Yttrium

⁸⁹Y

      38

        5

      37.7

1.3%

-0.9%

40

Zirconium

⁹⁰Zr

    190

        6

    182

6.2%

-4.3%

56

Barium

¹³⁸Ba

    681

      15

    737

12.4%

8.2%

57

Lanthanum

¹³⁹La

      24.9

        0.8

      24.6

2.3%

-1.0%

58

Cerium

¹⁴⁰Ce

      53.7

        0.7

      53.1

1.4%

-1.0%

59

Praseodymium

¹⁴¹Pr

        6.8

        0.5

        6.80

2.3%

0.0%

60

Neodymium

¹⁴⁶Nd

      28.8

        0.4

       28.7

2.4%

-0.5%

62

Samarium

¹⁴⁷Sm

        6.59

        0.12

        6.49

2.0%

-1.5%

63

Europium

¹⁵¹Eu

        1.95

        0.04

        1.92

2.0%

-1.6%

64

Gadolinium

¹⁵⁷Gd

        6.68

        0.12

        6.59

2.3%

-1.4%

65

Terbium

¹⁵⁹Tb

        1.05

        0.1

        1.05

1.3%

-0.5%

66

Dysprosium

¹⁶³Dy

        6.34

        0.13

        6.46

1.6%

1.9%

67

Holmium

¹⁶⁵Ho

        1.26

        0.12

        1.27

1.4%

1.0%

68

Erbium

¹⁶⁷Er

        3.63

        0.08

        3.55

1.2%

-2.1%

69

Thulium

¹⁶⁹Tm

        0.56

        0.04

        0.528

0.8%

-5.7%

70

Ytterbium

¹⁷⁴Yb

        3.38

        0.07

        3.37

0.8%

-0.2%

71

Lutetium

¹⁷⁵Lu

        0.51

        0.025

        0.501

1.3%

-1.9%

72

Hafnium

¹⁷⁸Hf

        4.95

        0.28

        4.77

1.9%

-3.6%

73

Tantalum

¹⁸¹Ta

        0.81

        0.13

        0.794

3.8%

-2.0%

74

Tungsten

¹⁸⁴W

        0.44

        0.08

        0.425

4.7%

-3.3%

82

Lead

²⁰⁸Pb

      13.6

        0.1

      13.8

8.1%

1.5%

90

Thorium

²³²Th

        5.98

        0.06

        5.72

2.9%

-4.3%

92

Uranium

²³⁸U

        1.75

        0.12

        1.63

2.7%

-6.7%