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Description

Matrix reference material of light sandy soil with normal analyte levels.
qMETRANAL31
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RM Matrix:
  • Soil
Type:
QCM
Package:
HDPE
Weight:
80 g

Metranal 31

Quality Control Material (QCM)

Matrix:

Light sandy soil, normal analyte levels
Powdered material, grain size < 100 µm

Packing:

80 g in an amber HDPE bottle

Intended use:

The material is primarily designed for internal and external quality control purposes in the determination of total element contents and contents of element fraction extractable by the below described conventional procedures in soils and materials of similar matrix (quality control charts, inter-laboratory comparisons, estimation of bias etc.) but not for ensuring traceability of measurements and calibration purposes.

Composition

Element Total element content
(mg/kg)2)
Mean ± uncertainty3)
Extract by aqua regia
1)
(mg/kg)2)
Mean ± uncertainty3)
As 12.3 10.4 ± 1.0
Ba 970 108
Be 3.32 ± 0.26 1.02 ± 0.10
Cd 0.32 ± 0.05 0.29 ± 0.04
Co 9.66 ± 0.61 9.15 ± 0.47
Cr 89.6 ± 4.2 71.9 ± 5.9
Cu 30.8 ± 0.9 28.9 ± 0.8
Hg 0.087 ± 0.006 0.085
Mn 540 ± 20 479 ± 18
Ni 31.9 ± 1.6 31.8 ± 1.2
Pb 43.8 ± 3.7 24.1 ± 1.7
V 58.7 ± 6.3 52.0 ± 3.4
Zn 120 ± 7 108.0 ± 3.5

1) Aqua regia extractable content according to ISO 11466 (1995)
2)Dry weight at 105 °C
3) The half-width of a 95% confidence interval (95%)


Matrix composition (% of oxides, dry weight)

Oxide %
SiO2 65.06
Al2O3 15.41
CaO 1.50
MgO 1.27
Fe2O3 4.73
K2O 3.16
Na2O 2.35
P2O5 0.34
TiO2 0.52
Loss of ignition at 900 °C 5.1
Declaration of analysis of RM (COA-METRANAL31-EN-V04.pdf, 362 Kb) Download

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