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IAEA-383

Marine Sediment (Venice lagoon)   Out of stock!
Inorganic   Sediment

Origin and preparation of the material

A sample of about 30 kg of sediment from the Lagoon of Venice (Italy) was collected. This sediment was deep-frozen, freeze-dried, ground and sieved to pass through a 250 µm stainless steel sieve. This powder, with a particle size of less than 250 µm was homogeneized by mixing in a rotating drum for two weeks. Then, aliquots of about 35 g were packed into glass bottles with aluminium screw caps and sealed with teflon tape.

Recommended values for mass fractions
Pesticides and PCBs 
(based on dry mass)

Analyte Recommended value1
[ng g-1]
95% Confidence interval2
[ng g-1]
pp'DDE1.20.75 – 1.8
Aroclor 12543624 – 48
PCB No 2810.77 – 1.4
PCB No 310.760.38 – 1.2
PCB No 522.51.1 - 2.8
PCB No 1012.91.3 - 4.2
PCB No 1050.990.77 - 1.5
PCB No 1102.41.8 - 3.6
PCB No 1183.32.2 - 4.1
PCB No 1280.630.52 - 0.87
PCB No 1384.42.6 - 6.1
PCB No 1493.22.3 - 3.7
PCB No 1534.32.3 - 5.4
PCB No 1700.820.62 - 1.3
PCB No 1802.5  1.9 - 3.4
PCB No 1830.470.34 - 0.57
PCB No 1871.30.63 - 1.5
PCB No 1940.540.31 - 0.73
PCB No 2092.11.2 - 3

1) Median values calculated after rejection of outliers
2) 95% Confidence interval of the median

Recommended values for mass fractions
Petroleum hydrocarbons
(based on dry mass)

Analyte  Recommended value1
[ng g-1]
95% Confidence interval2
[ng g-1]
n-C17380330 - 470
Phenanthrene160140 - 190
2 Methyl Phenanthrene3124 - 38
1 Methyl Phenanthrene2418 - 28
Anthracene3025 - 34
Chrysene170120 - 220
Fluorene2724 - 34
Fluoranthene290260 - 350
Pyrene280210 - 350
Benzo [b] Fluoranthene15096 - 190
Benzo [k] Fluoranthene7348 - 76
Benz [a] Anthracene10583 - 130
Perylene5841 - 130
Benzo [e] Pyrene160120 - 210
Benzo [a] Pyrene12077 - 140
1 Methyl Naphthalene1411 - 28
Naphthalene9652 - 110
Benzo [g,h,i] Perylene19069 - 230
Acenaphthylene4731 - 59
Acenaphthene1613 - 21

1) Median values calculated after rejection of outliers
2) 95% Confidence interval of the median

Information values for mass fractions
Chlorinated pesticides, PCBs Congeners, Petroleum hydrocarbons and Sterols
please consult Reference sheet and Report (attached)
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 expected mass fractions/concentration levels.

The assigned values were established on the basis of statistically valid results submitted by laboratories which had participated in an international interlaboratory comparison organized by the IAEA Environment Laboratories, Monaco, between 1997-1998.
The details concerning all reported results as well as the criteria for qualification as a recommended or information value may be found in the respective report (attached).


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