Studies of the dissolved organic compounds in the sea - A preliminary report on the isolation, separation and identification of free amino acids

A method of concentrating and desalting sea water using evaporation and ion exchange techniques is described. Circular paper chromatography has been used to separate and identify free amino acids in desalted concentrates of sea water from three different localities along the Norwegian coast. The following amino acids have so far been identified: cystine, lysine, histidine, arginine, serine, aspartic acid, glycine, hydroxyproline, glutamic acid, threonine, α-alanine, proline, tyrosine, tryptophan, methionine, valine, β-phenylalanine, isoleucine and leucine

PCBs and other organochlorines in BCR reference candidate fish oils

A Report to The Vrije Universiteit, lnstituut voor Milieuvraagstukken Amsterda

Kjemisk analyse av utvalgte aromatiske oljehydrokarboner (NPD) og polyklorerte bifenyler (PCB) i sjøvannsinntaket i Akvariet i Bergen

Prøver for analyse av utvalgte oljehydrokarboner og polyklorerte bifenyler ble tappet fra sjøvannsinntaket til Akvariet i Bergen. Analyse er foretatt ved hjelp av et datastyrt gasskromatograf /massespektrometer system. Analysen viser at det meget små konsentrasjoner av disse komponentene i sjøvannet fra denne lokaliteten. Kvaliteten på vannet må ansees som god

Uptake and elimination of aromatic hydrocarbons a chlorinated biphenyl in eggs and larvae of cod Gadus morhua

Artificially fertilized eggs and newly hatched larvae of cod Gadus rnorhua L. were exposed to 14C labelled naphthalene, phenanthrene, benzo(a)pyrene and 2. 4. 5. 2', 4', 5'-hexachlorobiphenyl (PCB) for 24 h and thereafter transferred to clean seawater. Radioactivity in eggs and larvae was measured at different times during exposure and after transfer to clean seawater. Maximum accumulation was found with phenanthrene, whereas naphthalene accumulated only slightly in both eggs and larvae. Naphthalene was, on the other hand, rapidly eliminated in contrast to the slow elimination of the other more lipophilic components. Most of the radioactivity accumulated in eggs was transferred to the larvae upon hatching. These findings show that cod eggs and larvae accumulate lipophilic xenobiotics from seawater and that the components will be stored for long time even after eggs and larvae are out of the polluted area