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Table 2 Replicate analyses of the 231Pa-2010 and 231Pa-2015 standards

From: Improvements in the determination of attogram-sized 231Pa in dissolved and particulate fractions of seawater via multi-collector inductively coupled plasma mass spectrometry

Sample no.

231Pa

Error

Notes

Measured in Lab

(× 103 ag/g)

(2σ)

LDEO 2015-1

39.00

1.36

STD 2015-1

LDEO

LDEO 2010-1

37.50

1.87

STD 2010-1

LDEO

STD 2010-1

37.78

0.29

STD 2010-1

UMN

STD 2010-2

37.63

0.20

STD 2010-1

UMN

STD 2010-3

37.63

0.18

STD 2010-1

UMN

STD 2010-4

37.92

0.18

STD 2010-1

UMN

STD 2010-1-ave

37.74

0.21

  

STD 2015-1

39.58

0.16

STD 2015-1

UMN

STD 2015-2

39.20

0.15

STD 2015-1

UMN

STD 2015-3

38.79

0.32

STD 2015-1

UMN

STD 2015-4

39.42

0.22

STD 2015-1

UMN

STD 2015-5

38.73

0.16

STD 2015-1

UMN

STD 2015-6

39.23

0.17

STD 2015-1

UMN

STD 2015-7

39.25

0.17

STD 2015-1

UMN

STD 2015-1-ave

39.17

0.19

  
  1. LDEO Lamont-Doherty Earth Observatory, Columbia University, UMN University of Minnesota