HISS-1: Marine Sediment Reference Material for Trace Metals and other Constituents

The following tables show those constituents for which certified and information values have been established. Certified values are based on results from data generated at NRC.

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 2 was applied for all elements. The table below lists certified values for HISS‑1 expressed on a dry mass basis.

Table 1: Certified Quantity Values

Element Mass Fraction, (mg/kg)
Arsenic (b,h,n) 0.801 ± 0.099
Beryllium (b,g) 0.129 ± 0.023
Cadmium (g,q) 0.024 ± 0.009
Chromium (n,q,x) 30.0 ± 6.8 Chromium in HISS‑1
Copper (g,i,q) 2.29 ± 0.37
Lead (g,i,q) 3.13 ± 0.40
Lithium (b,g,q) 2.83 ± 0.54
Manganese (b,g,i,n) 66.1 ± 4.2
Nickel (g,q,x) 2.16 ± 0.29
Selenium (g,h) 0.050 ± 0.007
Silver (b,q) 0.016 ± 0.002
Strontium (f,i,n,q,x) 96.9 ± 11.2
Vanadium (b,i,n,x) 6.80 ± 0.78
Zinc (g,i,n,q) 4.94 ± 0.79

Table 2: Certified Values - Matrix and Minor Constituents

Element Mass Fraction, (mg/kg)
Aluminum (f,i,x) 0.73 ± 0.05
Calcium (f,i,n,x) 1.14 ± 0.10
Iron (g,i,n,x) 0.246 ± 0.009
Potassium (i,n,x) 0.332 ± 0.013
Magnesium (f,i,x) 0.075 ± 0.016
Sodium (f,i,n,x) 0.373 ± 0.026
Titanium (i,n,x) 0.076 ± 0.004

Table 3: Information Values: Trace and Matrix Constituents

Element Mass Fraction, (mg/kg)
Antimony (n,q) 0.13
Cobalt (b,g,n) 0.65
Mercury (a) 0.01
Molybdenum (q) 0.13
Thallium (q) 0.06
Tin (q) 0.11
Uranium (q) 0.26
Element Mass Fraction, g/100g
Chlorine (n) 0.35
Silicon (x) 44

Chromium in HISS-1

It became apparent during the certification of HISS‑1 that there is a significant fraction of Cr that is not easily solubilized. The certified value of 30 mg/kg was obtained using solid sampling techniques or prolonged digestion with hydrofluoric, sulphuric and perchloric acids. Less vigorous acid dissolution techniques (including microwave heating using closed vessels at high pressure) typically result in a Cr mass fraction between 10 and 13 mg/kg.

Coding

  • a - Atomic fluorescence spectrometry
  • b - Inductively coupled plasma mass spectrometry (ICPMS)
  • c - Cold vapour atomic absorption spectrometry
  • f - Flame atomic absorption spectrometry
  • g - Graphite furnace atomic absorption spectrometry
  • h - Hydride generation atomic absorption spectrometry
  • i - Inductively coupled plasma atomic emission spectrometry
  • n - Instrumental neutron activation analysis
  • q - Isotope dilution inductively coupled plasma mass
  • x - X-ray fluorescence spectrometry

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.

Date of issue: February 1997
Date of expiry: December, 2019
Revised: October 2014, March 2016 (editorial update)

Date modified: