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IAEA-436

Tuna Fish Flesh Homogenate   Out of stock!
Organic   Fish

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 15 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]
Al3.060.422.68 – 3.44
As1.980.171.91 – 2.06
Cd0.0520.0070.050 - 0.054
Co0.0420.0060.039 – 0.045
Cr0.1940.0580.168 – 0.219
Cu1.730.191.66 – 1.79
Fe89.34.287.8 – 90.9
Hg4.190.364.04 – 4.34
Mn 0.2380.0420.218 – 0.257
Ni 0.0690.0410.040 – 0.099
Se4.630.484.36 – 4.89
Sn0.0300.0140.012 – 0.048
Sr0.5640.0620.523 – 0.606
Zn19.01.318.6 – 19.4
MeHg43.670.423.30 – 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]
Ca0.1540.0210.128 – 0.181
K12.30.611.5 – 13.0
Mg1.070.041.020 - 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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