MESS-4: Marine Sediment Reference Material for Trace Metals and other Constituents

The following tables show those constituents for which certified, reference and information values have been established for this marine sediment certified reference material (CRM).

The expanded uncertainty (UCRM) in the certified value is equal to U = kuc where uc is the combined standard uncertainty calculated according to the JCGM Guide and k is the coverage factor. A coverage factor of two (2) was applied for all elements. It is intended that UCRM accounts for every aspect that reasonably contributes to the uncertainty of the measurement. All listed values are expressed on a dry mass basis.

Table 1: Certified quantity values for trace metals in MESS-4

Element Mass fraction,
mg/kg
Antimony (a,d,g) 1.07 ± 0.16
Arsenic (b,e,d,g) 21.7 ± 2.8
Beryllium (b,c,d) 2.09 ± 0.28
Cadmium (a,d) 0.28 ± 0.04
Chromium (a,d,e,g) 94.3 ± 1.8
Cobalt (b,d,g) 13.0 ± 0.8
Copper (a,c,d,e) 32.9 ± 1.8
Lead (a,c,d,e) 21.5 ± 1.2
Lithium (a,c,d,e) 65.3 ± 6.8
Manganese (b,c,d,e) 298 ± 14
Nickel (a,c,d,e) 42.8 ± 1.6
Silver (a,c,d) 0.161 ± 0.024
Strontium (a,c,d,e) 132 ± 8
Thallium (a,d) 0.85 ± 0.10
Tin (a,d,g) 2.35 ± 0.12
Uranium (a,d,g) 3.4 ± 0.4
Vanadium (b,c,d,e) 216 ± 8
Zinc (a,c,d,e) 147 ± 6

Table 1 (continued): Certified quantity values for matrix constituents in MESS-4

Element Mass fraction,
g/kg
Aluminium (c,d,e,h) 79.1 ± 2.0
Calcium (c,d,e,h) 13.1 ± 0.6
Chlorine (g,h) 13.1 ± 4.4
Iron (d,e,g,h) 37.9 ± 1.6
Magnesium (c,d,e,h) 15.8 ± 1.2
Phosphorus (c,d,h) 1.04 ± 0.16
Potassium (c,d,e,h) 23.8 ± 1.0
Silicon (c,h) 278 ± 20
Sodium (d,e,g) 12.6 ± 0.8
Sulfur (c,d,h,i) 1.58 ± 0.20
Titanium (c,d,e,h) 3.84 ± 0.22

Table 2: Reference values

Element Mass fraction,
mg/kg
Mercury (a,f) 0.09 ± 0.04
Molybdenum (a,c,d) 2.53 ± 0.12

Table 3: Information values

Element Mass fraction,
mg/kg
Barium (d,g) 920
Bismuth (d) 2.7
Bromine (g) 60
Carbon (i) 17 900
Cerium (d,g) 72
Caesium (d,g) 10
Europium (g) 1.3
Gallium (d) 18
Germanium (d) 0.16
Hafnium (d,g) 3.0
Indium (d) 0.10
Lanthanum (d,g) 35
Lutetium (g) 0.11
Neodymium (g) 42
Niobium (d) 12
Rubidium (d,g) 180
Rhenium (d) 0.004
Scandium (d,g) 13.4
Samarium (g) 5.5
Selenium (a,d) 1.5
Tantalum (d) 1
Tellurium (d) 0.1
Thorium (d,g) 12
Tungsten (d) 1.3
Yttrium (d,g) 20
Ytterbium (g) 2
Zirconium (d) 96

Table 3 (continued): Information values

Element Mass fraction,
mg/kg (as Sn)
Monobutyltin (j) < 0.05
Dibutyltin (j) < 0.005
Tributyltin (j) < 0.005

Coding

The coding refers to the instrumental method of analyte determination.

  • a - Isotope dilution inductively-coupled plasma mass spectrometry (ID-ICP-MS)
  • b - Standard addition inductively-coupled plasma mass spectrometry (ICP-MS)
  • c - Inductively-coupled plasma mass spectrometry (ICP-MS)
  • d - Inductively-coupled plasma atomic emission spectroscopy (ICP-AES)
  • e - Standard addition inductively-coupled plasma atomic emission spectroscopy (ICP-AES))
  • f - Cold-vapour atomic absorption spectroscopy (CV-AAS)
  • g - Instrumental Neutron Activation Analysis (INAA)
  • h - Fusion X-ray fluorescence spectroscopy (XRF)
  • i - Combustion infrared spectroscopy (LECO)
  • j - Isotope dilution gas chromatography ICP-MS (ID-GC-ICP-MS)
  • k - thermal decomposition atomic absorption

Intended Use

This reference material is primarily intended for use in the calibration of procedures and the development of methods for the determination of trace and matrix constituents in marine sediments and materials with similar matrices. A minimum sample mass of 250 mg is recommended.

Uncertainty

Included in the overall combined uncertainty estimate (uc) are uncertainties in the batch characterization (uchar), uncertainties related to possible between-bottle variation (uhom), and uncertainties related to inconsistency between the various measurement methods (umethod). Expressed as standard uncertainties, these components are listed in Table 4.

Table 4: Uncertainty Components

Element uc,
mg/kg
uchar,
mg/kg
uhom,
mg/kg
umethod,
mg/kg
Antimony 0.08 0.08 0.02 0.00
Arsenic 1.4 1.0 1.0 0.0
Beryllium 0.14 0.06 0.13 0.00
Cadmium 0.02 0.02 0.01 0.00
Chromium 0.9 0.6 0.7 0.0
Cobalt 0.4 0.2 0.3 0.0
Copper 0.9 0.7 0.5 0.0
Lead 0.6 0.5 0.3 0.0
Lithium 3.4 0.9 0.6 3.2
Manganese 7 6 4 0
Nickel 0.8 0.6 0.6 0.0
Silver 0.012 0.012 0.003 0.000
Strontium 4 3 2 0
Thallium 0.05 0.05 0.00 0.00
Tin 0.06 0.04 0.05 0.00
Uranium 0.2 0.2 0.0 0.0
Vanadium 4 3 2 0
Zinc 3 2 2 0.0

Table 4 (continued): Uncertainty Components

Element uc,
g/kg
uchar,
g/kg
uhom,
g/kg
umethod,
g/kg
Aluminium 1.0 0.6 0.8 0.0
Calcium 0.3 0.3 0.1 0.0
Chlorine 2.2 0.6 1.2 1.7
Iron 0.8 0.4 0.7 0.0
Magnesium 0.6 0.4 0.0 0.4
Phosphorus 0.08 0.05 0.03 0.05
Potassium 0.50 0.38 0.32 0.00
Silicon 10 10 3 0
Sodium 0.4 0.4 0.1 0.0
Sulfur 0.10 0.06 0.05 0.07
Titanium 0.11 0.08 0.08 0.00

Date of issue: November 2014
Date of expiry: November 2019
Revised: April 2015 (typographical error for the units in Table 3 corrected and drying procedure clarified), March 2016 (editorial update), November 2017 (Hg value updated)

Date modified: