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IAEA-435A

Tuna Homogenate    
Organic   Animal Product

A large batch (150 kg wet weight) of tuna (Thunnus thynnus) was collected from the Mediterranean Sea to be used as an intercomparison material. This material was freeze-dried, ground, and sieved through a 250 μm stainless steel sieve. The powder fraction of particle size < 250 μm was further homogenized by mixing in a stainless steel rotating drum for two weeks. Then, aliquots of about 30 g were packaged into glass bottles with aluminum screw caps and sealed with Teflon tape.

Recommended values (based on dry mass)

Pesticides and PCBs

AnalyteUnit
ConcentrationStandard deviationN*
HCBng/g2.61.028
op DDDng/g2.50.526
PCB 28ng/g1.40.5516
PCB 31ng/g1.50.6610
PCB 66ng/g5.01.28
PCB 99ng/g164.16
PCB 105ng/g6.73.613
PCB 128ng/g9.54.711
PCB 149ng/g297.114
PCB 151ng/g122.76
PCB 156ng/g3.41.37
PCB 177ng/g7.94.26
PCB 183ng/g112.98
PCB 187ng/g31109
PCB 194ng/g3.91.112
PCB 206ng/g2.81.48
PCB 209ng/g2.00.846

Petroleum Hydrocarbons

AnalyteUnitConcentrationStandard deviationN*
Phytaneng/g83409
Naphthaleneng/g7.85.914
Phenanthreneng/g8.44.916
1 Methyl Phenanthreneng/g4.83.68
Chryseneng/g2.82.611
Acenaphtheneng/g3.43.58

* Number of accepted laboratory results which were used to calculate the recommended values and standard deviations.

Information values (based on dry mass)

Please note that information values are not to be used for any assessment of analytical performance or similar; they are included to provide information about the expected mass fractions/concentration levels

Chlorinated Pesticides

AnalyteUnitConcentrationStandard deviationN*
α HCHng/g0.760.738
β HCHng/g1.31.47
γ HCH (Lindane)ng/g1.10.9126
pp' DDEng/g915853
pp' DDDng/g127.439
pp' DDTng/g181040
op DDEng/g2.92.36
op DDTng/g7.84.87
Heptachlorng/g1.12.115
Heptachlor epoxideng/g2.82.514
Aldrinng/g1.10.6418
Dieldrinng/g3.82.120
Endrinng/g121217
α Endosulfanng/g7.76.112
β Endosulfanng/g171711
Endosulfan sulfateng/g13108
α Chlordaneng/g8.01.48
γ Chlordaneng/g0.480.344
Cis-Nonachlorng/g133.53
Trans-Nonachlorng/g279.03
Aroclor 1254ng/g36030019
Aroclor 1260ng/g30022021
PCB 18ng/g4.34.610
PCB 44ng/g3.02.811
PCB 49ng/g3.11.77
PCB 52ng/g4.42.527
PCB 70ng/g4.62.13
PCB 87ng/g6.93.98
PCB 95ng/g8.36.35
PCB 101ng/g231034
PCB 110ng/g158.310
PCB 118ng/g249.329
PCB 138ng/g703233
PCB 153ng/g813734
PCB 170ng/g115.916
PCB 174ng/g9.13.14
PCB 180ng/g321333
PCB 195ng/g2.21.37
PCB 201ng/g4.71.64

* Number of accepted laboratory results which were used to calculate the recommended values and standard deviations.

Petroleum Hydrocarbons

AnalyteUnitConcentrationStandard deviationN*
UVF Chryseneμg/g0.740.173
UVF ROPME oilμg/g3.40.514
Total Aliphaticsμg/g42328
Resolved Aliphaticsμg/g373210
Unresolved Aliphaticsμg/g24114
n - C17ng/g1601008
Pristaneμg/g262812
n - C18ng/g15014012
Σ n-Alkanes (C14-C34)μg/g3.22.16
Total Aromaticsμg/g12156
Resolved Aromaticsμg/g8.8126
Unresolved Aromaticsμg/g14153
Biphenylng/g6.61.43
1 Methyl Naphthaleneng/g171.04
2 Methyl Naphthaleneng/g262.94
2,6 Dimethyl Naphthaleneng/g242.94
2 Methyl Phenanthreneng/g24287
Anthraceneng/g7.9109
Fluoreneng/g1.61.39
Fluorantheneng/g3.94.212
Pyreneng/g111517
Benzo[b]fluorantheneng/g1.82.14
Benz[a]anthraceneng/g3.43.910
Benzo[e]pyreneng/g23284
Benzo[a]pyreneng/g264213
Benzo[g,h,i]peryleneng/g0.890.655
Indeno[1,2,3,cd]pyreneng/g2.22.64
Dibenz[a,h]anthraceneng/g8.7114
Acenaphthyleneng/g8.0123

* Number of accepted laboratory results which were used to calculate the recommended values and standard deviations.

The values listed above were established on the basis of statistically valid results submitted by laboratories which had participated in an international interlaboratory comparison organized by the IAEA Marine Environment Laboratory, Monaco. The details concerning the criteria for qualification as a recommended or information value can be found in the respective report (attached).


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