IAEA-406

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Producing Laboratory: MESL
Fish Homogenate

The IAEA-406 fish homogenate was obtained from an aquaculture as a freeze-dried, ground powder. It was further sieved through a 250 µm stainless steel sieve. The fraction with a particle size below 250 µm was used to produce the reference material.
The powder was further homogenized by mixing in a stainless steel rotating drum for two weeks. After homogeneity checking, aliquots of about 35g were packed into glass bottles with Teflon lined screw caps and sealed with Teflon tape. The bottles were sterilized by gamma-ray irradiation with a total dose of 25 kGy using a 60Co source.

Recommended values (based on dry mass)

Pesticides and PCBs

AnalyteUnitValue95% Confidence IntervalN
HCBng/g1.50.95 - 2.028
pp’ DDEng/g9.26.2 – 1137
pp’ DDDng/g2.82.0 - 3.732
op DDEng/g0.760.48 – 1.34
Heptachlorng/g0.320.23 – 0.4610
Aldrinng/g0.750.61 – 1.212
α Chlordaneng/g2.82.0 – 4.113
PCB No 28ng/g0.570.43 – 1.318
PCB No 31ng/g0.290.23 – 0.475
PCB No 52ng/g1.31.0 – 2.215
PCB No 101ng/g3.12.2 – 3.418
PCB No 110ng/g1.41.3 - 2.05
PCB No 138ng/g4.02.5 – 6.323
PCB No 149ng/g2.01.7 – 2.46
PCB No 153ng/g3.72.9 – 6.022
PCB No 156ng/g0.270.21 – 0.596
PCB No 170ng/g0.540.38 – 0.817
PCB No 180ng/g1.21.0 – 1.214

Petroleum Hydrocarbons

AnalyteUnitValue95% Confidence IntervalN
Pyreneng/g4.52.1 – 9.17

(Value) Concentration calculated as a median of the accepted laboratory means
(N) Number of accepted laboratory means which are used to calculate the recommended or information values and their respective confidence intervals

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

AnalyteUnitValue95% Confidence IntervalN
α HCHng/g0.790.23 – 1.710
β HCHng/g0.750.20 - 2.36
ɣ HCH (Lindane)ng/g0.270.11 – 0.8023
pp' DDTng/g3.01.8 – 5.637
op DDDng/g0.880.43 – 3.03
op DDTng/g2.90.90 – 4.46
Heptachlor Epoxideng/g0.990.37 – 1.614
Dieldrinng/g3.51.4 – 7.023
Endrinng/g1.90.86 – 5.116
α Endosulfanng/g3.50.94 – 4.712
β Endosulfanng/g1.41.0 – 1.67
Endosulfan Sulfateng/g3.63.1 – 5.66
ɣ Chlordaneng/g0.700.63 – 1.07
Cis Nonachlorng/g0.860.77 – 1.43
Trans Nonachlorng/g4.13.9 – 4.13
Aroclor 1254ng/g3326 – 5811
Aroclor 1260ng/g1311 – 156

PCB Congeners

AnalyteUnitValue95% Confidence IntervalN
PCB No 18ng/g0.380.11 – 0.935
PCB No 44ng/n0.460.46 – 0.525
PCB No 45ng/g0.180.03 – 0.333
PCB No 49ng/g0.410.36 – 0.444
PCB No 66ng/g0.670.49 – 0.964
PCB No 87ng/g0.820.69 – 1.44
PCB No 95ng/g1.11.0 – 1.23
PCB No 99ng/g0.910.89 – 1.23
PCB No 105ng/g0.710.48 - 0.889
PCB No 118ng/g2.51.9 – 3.720
PCB No 128ng/g0.80.51 – 1.45
PCB No 141ng/g0.410.40 - 0.434
PCB No 151ng/g0.670.62 – 0.754
PCB No 174ng/g0.300.29 – 0.373
PCB No 177ng/g0.180.16 – 0.194
PCB No 183ng/g0.320.28 – 0.354
PCB No 187ng/g1.10.96 – 1.26
PCB No 194ng/g0.130.10 – 0.254
PCB No 195ng/g0.040.03 – 1.53
PCB No 198ng/g0.0680.009 – 0.5003
PCB No 199ng/g0.160.013 – 0.173
PCB No 200ng/g0.100.009 – 1.13
PCB No 201ng/g0.120.07 – 0.233
PCB No 206ng/g0.050.03 – 3.13
PCB No 209ng/g0.070.07 – 1.14

Petroleum Hydrocarbons

AnalyteUnitValue95% Confidence IntervalN
UVF equivalent ROPME oilng/g84003500 - 160004
Total Aliphaticsng/g3300028000 - 340003
Resolved Aliphaticsng/g240008800 - 3100004
n-C17ng/g9130-2608
Pristaneng/g3500720 - 620011
n-C18ng/g24038 - 56010
Phytaneng/g20013 - 3106
∑ n Alkanes (C14-C34)ng/g45002800 - 220008
Total Aromaticsng/g260007200 - 530005
Resolved Aromaticsng/g350008100 - 550004
Naphthaleneng/g2416 - 4409
Phenanthreneng/g228 - 22012
1 Methyl Phenanthreneng/g123.6 – 924
2 Methyl Phenanthreneng/g4.73.3 - 103
Anthraceneng/g1915 - 434
Chryseneng/g2.32.2 – 4.45
Fluorantheneng/g4.94.0 - 9.69
Benzo (b) Fluorantheneng/g2.30.78 - 9.54
Benzo (k) Fluorantheneng/g2.80.38 - 1304
Benz (a) Anthraceneng/g0.810.24 - 0.915
Benzo (a) Pyreneng/g2.90.62 - 3.05
Benzo (ghi) Peryleneng/g0.780.28 - 1.34
Acenaphthyleneng/g8.01.1 - 263
Acenaphtheneng/g11000.29 - 23004

(Value) Concentration calculated as a median of the accepted laboratory means
(N) Number of accepted laboratory means which are used to calculate the recommended or information values and their respective confidence intervals

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).