100 kg of sediment, provided by the Quasimeme Project, were collected in Kilbrannan Sound, in the river Clyde’s estuary, Scotland. This sediment sample was dried, ground and sieved. This powder, about 26 kg, was homogenized by mixing in a stainless steel rotating drum for three weeks. Then, aliquots of about 45 grams were packaged into glass bottles with aluminium screw caps, labeled IAEA-159 and sealed with Teflon tape.
Recommended values
Pesticides and PCBs
Analyte | Units | Concentration* | Standard Deviation** | N*** |
pp’ DDE | ng/g | 0.89 | 0.50 | 36 |
pp’ DDD | ng/g | 0.82 | 0.58 | 30 |
op DDD | ng/g | 0.39 | 0.22 | 5 |
Heptachlor | ng/g | 0.31 | 0.21 | 11 |
Dieldrin | ng/g | 0.48 | 0.37 | 18 |
Aroclor 1260 | ng/g | 5.54 | 3.31 | 10 |
PCB No 18 | ng/g | 0.74 | 0.53 | 10 |
PCB No 28 | ng/g | 0.57 | 0.28 | 22 |
PCB No 44 | ng/g | 0.35 | 0.14 | 8 |
PCB No 52 | ng/g | 0.67 | 0.25 | 25 |
PCB No 66 | ng/g | 0.41 | 0.07 | 5 |
PCB No 101 | ng/g | 0.52 | 0.16 | 25 |
PCB No 118 | ng/g | 0.52 | 0.21 | 27 |
PCB No 138 | ng/g | 0.60 | 0.31 | 30 |
PCB No 149 | ng/g | 0.52 | 0.14 | 9 |
PCB No 153 | ng/g | 0.56 | 0.09 | 21 |
PCB No 170 | ng/g | 0.15 | 0.04 | 11 |
PCB No 180 | ng/g | 0.26 | 0.10 | 25 |
PCB No 194 | ng/g | 0.09 | 0.04 | 8 |
Petroleum Hydrocarbons
Analyte | Units | Concentration* | Standard Deviation** | N*** |
n-C17 | ng/g | 105 | 56 | 16 |
Pristane | ng/g | 120 | 53 | 13 |
Phytane | ng/g | 81 | 53 | 16 |
Naphthalene | ng/g | 23 | 13 | 32 |
1 methyl naphthalene | ng/g | 20 | 10 | 8 |
2 methyl naphthalene | ng/g | 30 | 19 | 7 |
Phenanthrene | ng/g | 59 | 29 | 45 |
1 methyl phenanthrene | ng/g | 20 | 9.6 | 10 |
Anthracene | ng/g | 11 | 5.1 | 22 |
Chrysene | ng/g | 58 | 26 | 44 |
Fluorene | ng/g | 13 | 7.7 | 17 |
Fluoranthene | ng/g | 110 | 32 | 41 |
Pyrene | ng/g | 100 | 38 | 50 |
Benzo[b]fluoranthene | ng/g | 100 | 42 | 23 |
Benzo[k]fluoranthene | ng/g | 49 | 14 | 18 |
Benz[a]anthracene | ng/g | 54 | 20 | 45 |
Perylene | ng/g | 27 | 11 | 9 |
Benzo[e]pyrene | ng/g | 82 | 8.2 | 11 |
Benzo[a]pyrene | ng/g | 58 | 26 | 44 |
Benzo[g,h,i]perylene | ng/g | 95 | 45 | 42 |
Indeno[1,2,3-cd]pyrene | ng/g | 120 | 34 | 25 |
Dibenz[a,h]anthracene | ng/g | 25 | 14 | 17 |
Acenaphthylene | ng/g | 6.4 | 5.4 | 11 |
Acenaphthene | ng/g | 6.0 | 4.0 | 16 |
Dibenzothiophene | ng/g | 6.5 | 2.8 | 5 |
* Average values expressed on a dry-weight basis
** Standard deviation
*** Number of accepted laboratory means which were used for calculation of recommended or information 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 and PCBs
Analyte | Units | Concentration* | Standard Deviation** | N*** |
HEOM | mg/g | 0.53 | 0.29 | 8 |
HCB | ng/g | 0.17 | 0.15 | 20 |
α HCH | ng/g | 0.10 | 0.06 | 9 |
β HCH | ng/g | 0.24 | 0.17 | 5 |
ɣ HCH (Lindane) | ng/g | 0.21 | 0.18 | 24 |
δ HCH | ng/g | 0.57 | 0.60 | 4 |
pp' DDT | ng/g | 0.71 | 0.69 | 30 |
op DDE | ng/g | 0.19 | 0.09 | 4 |
op DDT | ng/g | 2.32 | 4.33 | 4 |
Heptachlor epoxide | ng/g | 2.84 | 3.31 | 5 |
Aldrin | ng/g | 0.17 | 0.15 | 11 |
Endrin | ng/g | 0.77 | 0.81 | 10 |
α Endosulfan | ng/g | 1.11 | 1.02 | 7 |
β Endosulfan | ng/g | 1.49 | 1.93 | 7 |
Endosulfan sulfate | ng/g | 3.46 | 3.69 | 6 |
α Chlordane | ng/g | 0.17 | 0.12 | 6 |
β Chlordane | ng/g | 0.67 | 0.80 | 6 |
Aroclor 1254 | ng/g | 14.3 | 8.38 | 12 |
PCB No 8 | ng/g | 0.37 | 0.21 | 3 |
PCB No 31 | ng/g | 0.28 | 0.05 | 7 |
PCB No 49 | ng/g | 0.32 | 0.09 | 4 |
PCB No 70 | ng/g | 0.62 | 0.30 | 3 |
PCB No 74 | ng/g | 0.20 | 0.03 | 3 |
PCB No 87 | ng/g | 0.44 | 0.25 | 4 |
PCB No 95 | ng/g | 1.26 | 1.17 | 3 |
PCB No 99 | ng/g | 0.40 | 0.20 | 4 |
PCB No 105 | ng/g | 0.41 | 0.31 | 12 |
PCB No 110 | ng/g | 0.54 | 0.16 | 7 |
PCB No 128 | ng/g | 0.27 | 0.27 | 7 |
PCB No 156 | ng/g | 0.32 | 0.43 | 8 |
PCB No 177 | ng/g | 0.20 | 0.10 | 4 |
PCB No 183 | ng/g | 0.27 | 0.32 | 4 |
PCB No 187 | ng/g | 0.39 | 0.05 | 3 |
PCB No 195 | ng/g | 0.08 | 0.03 | 3 |
PCB No 201 | ng/g | 0.15 | 0.12 | 3 |
PCB No 206 | ng/g | 0.34 | 0.47 | 3 |
PCB No 209 | ng/g | 0.14 | 0.21 | 4 |
Petroleum Hydrocarbons
Analyte | Units | Concentration* | Standard Deviation** | N*** |
EOM | mg/g | 0.65 | 0.37 | 7 |
UVF equivalent Chrysene | μg/g | 14 | 9.5 | 5 |
UVF equivalent ROPME oil | μg/g | 180 | 65 | 4 |
Total Aliphatics | μg/g | 55 | 54 | 12 |
Resolved Aliphatics | μg/g | 6.9 | 4.8 | 10 |
Unresolved Aliphatics | μg/g | 62 | 48 | 8 |
n-C18 | ng/g | 92 | 40 | 15 |
Σ n-Alkanes (C14-C34) | μg/g | 3.9 | 2.4 | 16 |
Total Aromatics | μg/g | 1.40 | 0.65 | 7 |
Resolved Aromatics | μg/g | 0.90 | 0.29 | 7 |
Unresolved Aromatics | μg/g | 8.4 | 9.8 | 5 |
Biphenyl | ng/g | 11 | 3.6 | 4 |
2,6 dimethyl naphthalene | ng/g | 21 | 4.2 | 4 |
2 methyl phenanthrene | ng/g | 26 | 6.5 | 9 |
Triphenylene | ng/g | 110 | 84 | 3 |
1 methyl pyrene | ng/g | 17 | 4.8 | 3 |
Benzo[a]fluoranthene | ng/g | 15 | 7.1 | 3 |
* Average values expressed on a dry-weight basis
** Standard deviation
*** Number of accepted laboratory means which were used for calculation of recommended or information values and standard deviations
The values listed above were established on the basis of statistically valid results submitted by laboratories which had participated in one or more international intercomparisons 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).