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Table 2 CRM 112A Spike proportions with different diluted spike solutions (SP1, SP2, SP3, SP4)

From: Expanded uncertainty modeling of the uranium isotope dilution standards

 

CRM 112 A-1 (SP1)

CRM 112 A-2 (SP2)

CRM 112 A-3 (SP3)

CRM 112 A-4 (SP4)

mgU/g (spike)

4.402361

0.88090847

0.542278906

0.130669117

proportions (g)

2.1

2.06

2.06

2.05

Spike mg U

9.2449581

1.814671448

1.117094546

0.267871691

Spike to sample portions (ca.)

1:4

1:2

1:3

1:2

  1. Due to the volumetric usage of the solutions, amounts may vary. For the abbreviations, see Table 1