Sediment Exchange for Tests on Organic Contaminants - SETOC
Proficiency tests
Participation is open to all laboratories.
Test programme | Fresh Water Sediment |
Number of rounds | 4 per year |
Number of samples | 4 per round |
Sample size | 100 g |
Origin | Natural source |
Exercise name | SETOC |
General information
- The sample types/matrices are chosen to represent the materials which you normally analyse. There is no spiking or use of artificial samples.
- The samples are obtained from river beds, lake bottoms and harbours.
- Sediments are dried and milled and sieved to < 0.5 mm.
- The homogeneity of each batch of samples is tested on a selection of parameters.
- The dried sediment samples have been are stable over a number of years when stored at room temperature.
- You analyze the samples according to your own procedures and for those elements and parameters you are interested in. ·Your results are processed at WEPAL-QUASIMEME and published every three months under confidential code names.
- The reports contain all data, statistical evaluation including Z-score plots and method information about the method used.
- Your reports are available within three weeks after the submission deadline
- New determinands can be added on request.
Determinands and analysis
Polycyclic Aromatic Hydrocarbons
Determinand group
- Polycyclic aromatic hydrocarbons
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Halogenated Organics
Determinand group
- Polychlorobiphenyls
- Organochlorine pesticides
- Dibenzo-P Dioxin**
- Dibenzofuran**
** Dioxins and Furans only once a year
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Major and Trace Elements
Deteminands groep
- Metals
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Brominated Flame Retardants
Deteminands groep
- Brominated Flame Retarders
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Others and Experimental
Determinand group
- Other parameters (CN fractions, organic and inorganic C, halogeneted hydrocarbons, mineral oil)
- Experimental
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Webshop
Samples of previous proficiency tests are sold as reference materials. Available materials can be selected and ordered in our webshop. Participants of our proficiency tests are entitled to a discount.