Accumulation, fractionation and release of oil by the intertidal clamMacoma balthica

✍ Scribed by L. E. Clement; M. S. Stekoll; D. G. Shaw

• Book ID: 104769065
• Publisher: Springer-Verlag
• Year: 1980
• Tongue: English
• Weight: 776 KB
• Volume: 57
• Category: Article
• ISSN: 0025-3162
• DOI: 10.1007/bf00420966

✦ Synopsis

The bivalve mollusc Macorna balthica accumulated hydrocarbons during 180 days of continuous exposure to Prudhoe Bay crude oil in seawater dispersions with nominal concentrations of 0.03, 0.3 and 3.0 mg 1-1 . The mollusc's ability to concentrate oil from seawater increased with decreasing oil-in-water concentration. Decreases in oil burden began after 30 to 120 days (depending on the oil concentration) and continued for at least 60 days after exposure to oil ceased. Aliphatic and aromatic hydrocarbons were fractionated in markedly different ways by the bivalve. Branched and cyclic aliphatics in the molecular weight-range dodecane through hexadecane were preferentially retained over straightchain and their higher homologs. Larger and more substituted aromatic compounds were selectively concentrated. There appeared to be no selective concentration of aromatic sulphur compounds.