Abstract
Aquaculture is often blamed for polluting the marine environment. The pollution may affect the fish in the pens but also the surrounding environment depending on water currents and sedimentation rates. This study has examined the fish feed, fish tissue (Norwegian quality cut) and faeces, as well as sediments at two fish farms on the Trøndelag coast. Identification and semi-quantitative analyses of these sample matrices is a valuable addition to the environmental assessment of fish farm operation as well as the environmental pollution profile. Identification and quantification of accumulated contaminants can help to document the pollution source and inform strategies for environmental protection. A second analysis stream following a non-target screening approach employed GC×GC-qToF-MS for analysis and library searched for tentative and suspect identity matching. The toxicity of the tentative suspect pollutants, whether known or unknown, is then assessed by an in-house script facilitating automated searched against toxicity databases.