IAEA-408 , Sediment

Inorganic , Sediments

  • Unit Size: 40g
  • Price per Unit: 150 EUR
  • Report: IAEA/AL/121
  • Date of Release: 1999-01-11
  • Reference Sheet: IAEA-408
  • Producing Laboratory: email

A large sediment sample was collected from the mudflats of the Tagus estuary. This sediment was deep-frozen, freeze-dried, ground and sieved through a 150 μm stainless steel sieve.

The sediment fraction of particle size less than 150 μm was homogenized by mixing in a rotating drum for two weeks. Then, aliquots of about 40 g were packaged into glass bottles with aluminium screw caps and sealed with Teflon tape.

Recommended values (based on dry mass)

Pesticides and PCBs

Analyte
Recommended value*
[ng g-1]
95% Confidence interval**
[ng g
-1]
HCB 0.41 0.30 - 0.57
γ-HCH (Lindane) 0.19 0.11 - 0.21
pp' DDE 1.4 0.9 - 2.0
pp' DDT 0.67 0.48 - 0.98
Dieldrin 0.30 0.30 - 0.48
PCB 28 0.79 0.35 - 0.98
PCB 52 0.60 0.38 - 0.93
PCB 101 1.2 0.8 - 1.7
PCB 105 0.57 0.44 - 0.67
PCB 110 0.83 0.50- 0.90
PCB 118 1.2 0.9 - 1.6
PCB 128 0.33 0.27 - 0.53
PCB 138 1.6 1.1 - 2.1
PCB 149 1.4 1.3 - 1.6
PCB 153 1.9 1.0 - 2.1
PCB 170 0.47 0.34 - 0.59
PCB 180 1.1 0.9 - 1.2
PCB 187 0.68 0.49 - 0.94
PCB 194 0.20 0.18 - 0.23

*Median values expressed on a dry mass basis
**95% confidence intervals of the median

Petroleum Hydrocarbons

Analyte Unit Recommended value* 95% Confidence interval**
Resolved Aliphatics μg/g 11 6 - 17
n - C17 ng/g 74 56 - 140
Pristane ng/g 69 50 - 130
Phytane ng/g 78 63 - 130
Σ n-Alkanes (C14 - C34) μg/g 8.1 4.3 - 12.0
Phenanthrene ng/g 35 21 - 43
Anthracene ng/g 9.8 8.0 - 13.0
Chrysene ng/g 35 25 - 56
Fluoranthene ng/g 84 53 - 110
Pyrene ng/g 77 57 - 93
Benzo[b]fluoranthene ng/g 46 32 - 69
Benzo[k]fluoranthene ng/g 46 26 - 61
Benz[a]anthracene ng/g 53 35 - 60
Perylene ng/g 320 140 - 420
Benzo[e]pyrene ng/g 55 51 - 81
Benzo[a]pyrene ng/g 48 30 - 63
Naphthalene ng/g 27 16 - 47
Benzo[g,h,i]perylene ng/g 38 20 - 52

*Median values expressed on a dry mass basis
**95% confidence intervals of the median

Information Values (based on dry mass)

Chlorinated Pesticides

Analyte
Information value*
[ng g-1]
95% Confidence interval**
[ng g
-1]
α-HCH 0.61 0.21 - 1.50
β-HCH 0.55 0.38 - 1.70
pp' DDD 0.87 0.56 - 1.70
op DDD 0.19 0.18 - 0.33
op DDT 0.38 0.09 - 3.80
Heptachlor 0.42 0.23 - 0.70
Heptachlor epoxide 0.64 0.43 - 1.50
Aldrin 0.41 0.20- 2.30
Endrin 0.57 0.14 - 1.20
α-Endosulfan 1.6 0.3 - 6.2
Endosulfan sulfate 1.6 0.5 - 8.2
α-Chlordane 0.12 0.10 - 0.34
γ-Chlordane 0.27 0.06 - 0.48
Aroclor 1254 19 14 - 40
Aroclor 1260 10 7 - 25

*Median values expressed on a dry mass basis
**95% confidence intervals of the median

PCBs Congeners

Analyte
Information value*
[ng g-1]
95% Confidence interval**
[ng g-1]
PCB 8 0.24 0.22 - 4.60
PCB 18 0.74 0.13 - 1.90
PCB 31 0.43 0.09 - 1.50
PCB 44 0.47 0.23 - 3.00
PCB 49 0.35 0.22 - 0.38
PCB 87 0.87 0.26 - 1.10
PCB 156 0.36 0.31 - 0.39
PCB 174 0.34 0.20 - 0.44
PCB 177 0.35 0.23 - 0.43
PCB 183 0.32 0.26 - 0.33
PCB195 0.12 0.06 - 0.16
PCB 196 0.22 0.17 - 0.40
*Median values expressed on a dry mass basis
**95% confidence intervals of the median

Petroleum Hydrocarbons

Analyte
Unit
Information value*
[ng g-1]
95% Confidence interval**
[ng g-1]
UVF equivalent Chrysene μg/g 6.0 4.6 - 19.0
UVF equivalent ROPME oil μg/g 49 35 - 120
Total aliphatics μg/g 120 81 - 160
Unresolved aliphatics μg/g 110 68 - 150
n - C18 ng/g 90 60 - 110
Total aromatics μg/g 3.7 1.3 - 11.0
Resolved aromatics μg/g 1.9 0.24 - 6.8
2 Methyl-phenanthrene ng/g 12 12 - 14
1 Methyl-phenanthrene ng/g 10 9.2 - 11
Fluorene ng/g 6.7 4.6 - 24.0
1 Methyl-naphthalene ng/g 7.5 4.7 - 12.0
2 Methyl-naphthalene ng/g 14 13 - 33
Indeno[1,2,3,cd]pyrene ng/g 51 45 - 53
Dibenz[ah]anthracene ng/g 11 8 - 14
Acenaphthylene ng/g 3.6 2.1 - 4.7
Acenaphthene ng/g 3.3 2.0 - 17.0

*Median values expressed on a dry mass basis
**95% confidence intervals of the median

Sterols

Information values for sterol compounds (Coprostanol, Cholesterol, Cholestanol, β-Sitosterol, Campesterol and Stigmasterol) are available in the report (attached).

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

 

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