Contaminants and microorganisms
The National Institute of Nutrition and Seafood Research carries out analyses of chemical contaminants and microbiological parameters. Examinations of the following contaminants are included in the programme: cadmium, lead, mercury, chromium, zinc, copper and arsenic as well as dioxins, dioxin-like PCBs, PCB, polybrominated diphenylethers (a brominated flame retardant), tributyl tin and polyaromatic hydrocarbons. Samples for microbiological parameters are taken throughout the year, and include E. coli, Enterobacteriaceae and Salmonella.The sampling is carried out by the Norwegian Food Safety Authority.
Algae
Both the Norwegian Food Safety Authority and the producers participate in the monitoring of specific algae toxins (ASP, AZA, DSP, PSP, PTX, YTX) in shellfish. The samples are analysed by the Norwegian School of Veterinary Science. Algae content of water samples from the shellfish farms are also monitored, and the dominant algae species with potential toxin production are closely watched. Publicly accredited reference laboratories and private laboratories carry out the analyses. The results from the shellfish monitoring are available to the public.
Measures
If excessive levels of chemical or biological contaminants are discovered in farmed shellfish, the product will be withheld from the market and the source of pollutant will be ascertained and removed.
When the local situation regarding harvesting and consumption of shellfish is deemed unsatisfactory regarding algae toxins, the Norwegian Food Safety Authority is systematically issuing local or regional dietary advice.
Last updated 9 March 2010