IAEA-436 , Tuna Fish Flesh Homogenate

Organic , Fish

  • Unit Size: 35g
  • Price per Unit: 120 EUR
  • Report: IAEA-AL-157
  • Date of Release: 2006-02-17
  • Reference Sheet: IAEA-436
  • Producing Laboratory: email

A large quantity of tuna fish filet was obtained commercially in 2004 for use as an intercomparison material. It was deep-frozen, freeze-dried, and then ground and sieved. The material was homogenized by mixing in a stainless steel rotating drum for 15 days. After checking for the homogeneity of the sample material, aliquots of about 35 g were packed into cleaned amber borosilicate glass bottles with Teflon lined screw caps and sealed in plastic bags. Approximately 500 bottles were produced.

Recommended values for mass fractions: trace elements
(based on dry mass)

Analyte  Recommended value1
[mg kg-1]
Standard deviation2
[mg kg-1]
95% Confidence interval3
[mg kg-1]
Al 3.06 0.42 2.68 – 3.44
As 1.98 0.17 1.91 – 2.06
Cd 0.052 0.007 0.050 - 0.054
Co 0.042 0.006 0.039 – 0.045
Cr 0.194 0.058 0.168 – 0.219
Cu 1.73 0.19 1.66 – 1.79
Fe 89.3 4.2 87.8 – 90.9
Hg 4.19 0.36 4.04 – 4.34
Mn  0.238 0.042 0.218 – 0.257
Ni  0.069 0.041 0.040 – 0.099
Se 4.63 0.48 4.36 – 4.89
Sn 0.030 0.014 0.012 – 0.048
Sr 0.564 0.062 0.523 – 0.606
Zn 19.0 1.3 18.6 – 19.4
MeHg4 3.67 0.42 3.30 – 4.05

Recommended values for mass fractions: matrix and minor constituents
(based on dry mass)

Analyte  Recommended value1
[g kg-1]
Standard deviation2
[g kg-1]
95% Confidence interval3
[g kg-1]
Ca 0.154 0.021 0.128 – 0.181
K 12.3 0.6 11.5 – 13.0
Mg 1.07 0.04 1.020 - 1.11

(1) Mean values expressed on a dry mass basis
(2) 1 Standard deviation of the mean
(3) 95% Confidence Interval, µ
(4) Reported as mg Hg kg-1

Information values for mass fractions
Kindly consult the Reference sheet (attached)

The assigned values were established on the basis of statistically valid results submitted by laboratories which had participated in international interlaboratory comparison organized in 2005.
The details concerning all reported results as well as the criteria for qualification may be found in the respective report (attached).

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