IAEA Reference Materials
Reference
Sheets
IAEA-MA-B-3/RN
RADIONUCLIDES IN MARINE FISH FLESH
Intended
Use
This
sample is intended to be used as a reference material for the measurement
of radionuclides in marine organisms. It can also be used as a quality control
material for the assessment of a laboratory's analytical work, for the validation
of analytical methods and for quality assurance within a laboratory.
Origin
and preparation of the material
The
Garpike fish (Belona belona) used to produce IAEA-MA-B-3/RN was caught
in the Western Baltic Sea (Kattegatt) in 1984 and obtained from a commercial
supplier in Denmark. Approximately 600 kg of fresh fish was filleted and lyophilized
and shipped to IAEA-MEL.
The material was ground to pass a 1 mm sieve and the fraction
below this value was homogenised in a rotating stainless steel drum for 150
hours. The material was dispensed in 50 g units.
Date of Release:
August 1987
|
Unit Price:
50 €
|
Unit Size:
50 g
|
| Producer:
Marine Environment Laboratory (MEL) International Atomic Energy Agency B.P. No 800 MC-98012 Monaco |
Supplier:
Analytical Quality Control Services Agency's Laboratories, Seibersdorf A-2444 Seibersdorf, Austria |
|
Reference Sheet:  IAEA-MA-B-3/RN(.pdf) |
||
Reference
Date for decay correction: 1st January 1986 |
||||
| |
|
|
|
|
| |
|
|
|
|
| |
|
|
|
|
| * |
Number of accepted laboratory results which were used to calculate the
recommended values and their respective confidence intervals about the
median value. |
| (R/I) | Classification
assigned to the property value for Analyte (Recommended/Information) |
The
values listed above were established on the basis of statistically valid results
submitted by laboratories which had participated in an international intercomparison
exercise organized between 1985-87. The details concerning the criteria for
qualification as a recommended value can be found in the report (IAEA/RL/149)
"Intercomparison of Radionuclide Measurements in Marine Fish Flesh Sample
MA-B-3" [1]. This report is available free of charge upon request.
Homogeneity
The
homogeneity of the bottled material was assessed using marker radionuclides
(40K and 137Cs) in several samples from bottles taken
at random. The homogeneity was determined using one-way analysis of variance
and it was concluded that the material satisfied the homogeneity criteria
for the radionuclides concerned.
Dry
weight determination
All recommended
values are expressed on a dry weight basis. Therefore, the dry weight must
be determined at the time of analysis, using separate sub-samples of at least
500 mg dried to constant weight in a drying oven set to 105 °C. Subsequent
weighings should differ by less than 5 mg.
Instructions
for use
The
recommended minimum intake mass for analysis of radionuclides is 20 g. Analysts
are reminded to take appropriate precautions in order to avoid contamination
of the material during handling. No special precautions are required for the
storage of this material.
References:
| [1] |
Last updated 30 March 2004
