Sample no

Certified Reference Materials (Composition, %)

Vanadium (%)

In C.R.M.

Sample

Found

(n = 5)

RSD^b

1

BAS-CRM-646: High-speed steel

(Cr, Mo, V and Tc)

1.99

1.985

1.5

2

BCS-CRM-220/L: High-speed steel

(C, Si, S, P, Mn, Mo, V, Cr, Ni, Co, W and Cu)

2.09

2.095

1.8

3

BSC-CRM-241/L: High-speed steel

(Cr, V, W, Co, Mo, Mn, C, Si, P and S)

1.57

1.578

1.5

4

GSBH-40101-96: Cr₁₂MoV: Dies steel

(Cr, Mo, V, Ni, Cu, Co)

0.411

0.410

2.0

5

YSBC-1013-1-95: 9Cr₁₇MoVCo:

High-tensil steel (C, Cr, Mo, V, Si, Mn and Co)

0.24

0.25

2.5

6

CRM-ASTMRCVD-74231: Human Serum^a

(Quest-Diagonisstics, ISO-17025)

0.83^e

0.81

1.0

7

CRM 029: Sigma-Aldrich: Soil

(ISO/17025)

71.0^d

70.5

1.8

8

CRM-MESS-3: Sediments

234 ± 10^c

233 ± 3.0

2.0

9

NIST@SRM-1577c-Bovine liver

8.17 ± 0.66^d

8.15 ± 0.5

2.0

10

NIST-CRM-TMDW: Drinking water

30.0^f

29.8

1.5