LUTS-1: Non defatted lobster hepatopancreas certified reference material for trace metals

The following table shows those consituents for which certified values have been established for LUTS-1. Certified values are based on the results of determinations by at least two independent methods of analysis. 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. It is intended that UCRM accounts for every aspect that reasonably contributes to the uncertainty of the measurement. A coverage factor of k=2 was applied for all elements.

Table 1: certified values for LUTS‑1

Element As bottled (mg/kg) Dry weight corrected (mg/kg)
Arsenic (d,g,h,n,s) 2.83 ± 0.13 19.0 ± 0.9
Cadmium (g,i,p) 2.12 ± 0.15 14.2 ± 1.0
Calcium (f,i,n) 203 ± 33 1360 ± 220
Chromium (c,g) 0.079 ± 0.012 0.53 ± 0.08
Cobalt (d,g,n) 0.051 ± 0.006 0.34 ± 0.04
Copper (f,g,i,n,p) 15.9 ± 1.2 107 ± 8
Iron (d,f,g,i,n) 11.6 ± 0.9 77.8 ± 6.0
Lead (g,p,t) 0.010 ± 0.002 0.069 ± 0.011
Magnesium (f,i,n) 89.5 ± 4.1 601 ± 28
Manganese (d,f,g,i,n) 1.20 ± 0.13 8.02 ± 0.86
Nickel (d,g,k,p) 0.200 ± 0.034 1.34 ± 0.23
Potassium (e,f,n) 948 ± 72 6360 ± 480
Selenium (c,g,h) 0.641 ± 0.054 4.30 ± 0.36
Silver (g,i,n,p) 0.580 ± 0.049 3.89 ± 0.33
Strontium (f,i,p) 2.46 ± 0.28 16.5 ± 1.9
Zinc (f,i,n,p) 12.4 ± 0.8 82.9 ± 5.4

Coding

The coding refers only to the ultimate method of analyte determination. No mention is made here regarding the various methods of sample preparation, decomposition and possible analyte separation prior to determination within each coded method.

  • c - Isotope dilution gas chromatography/mass spectrometry
  • d - Inductively coupled plasma mass spectrometry
  • e - Flame atomic emission spectrometry
  • f - Flame atomic absorption spectrometry
  • g - Graphite furnace atomic absorption spectrometry (GFAAS)
  • h - Hydride generation atomic absorption spectrometry
  • i - Inductively coupled plasma atomic emission spectrometry
  • k - Adsorptive accumulation voltammetry
  • n - Instrumental neutron activation
  • p - Isotope dilution inductively coupled plasma mass spectrometry
  • s - Hydride generation/in-situ concentration/GFAAS determination
  • t - Ethyllead generation/in-situ concentration/GFAAS determination

Intended use

This reference material is primarily intended for use in the calibration of procedures and the development of methods used for the analysis of biological materials, especially those with a high lipid content.

Date of issue: June 1989
Date of expiry: December 2019
Revised: August 1995, January 2005, November 2013, March 2016 (editorial update), November 2017 (expiry date extended)

Date modified: