PMID: 16519295Mar 8, 2006Paper

In situ lubricant degradation in Antarctic marine sediments. 1. Short-term changes

Environmental Toxicology and Chemistry
Belinda A W ThompsonJ Stark

Abstract

A large-scale, in situ experiment was set up near the Bailey Peninsula area (Casey Station, East Antarctica) to monitor the natural attenuation of synthetic lubricants in marine sediments over five years. Here, we report the short-term changes after 5 and 56 weeks. The lubricants tested were an unused and used Mobil lubricant (0W/40; Exxon Mobil, Irving, TX, USA) and a biodegradable alternative (0W/20; Fuchs Lubricants, Harvey, IL, USA). Clean sediment was collected, contaminated with the lubricants, and deployed by divers onto the seabed in a randomized block design. The sampled sediments were analyzed by gas chromatography-flame-ionization detector and gas chromatography-mass spectrometry with selective ion monitoring. The base fluid of all lubricant treatments did not decrease significantly after 56 weeks in situ. Alkanoate esters of 1,1,1-tris(hydroxymethyl)propane in the biodegradable and unused lubricants were degraded extensively in situ; however, these esters constituted only a minor proportion of the lubricant volume. The additives, alkylated naphthalenes and substituted diphenylamines, were fairly resistant to degradation, which is of environmental concern because of their toxicity. The biodegradable lubricant did not...Continue Reading

Citations

Oct 25, 2011·The Science of the Total Environment·E N M WoolfendenS C George
Dec 7, 2007·Bioresource Technology·Mehrdad FarhadianChristian Larroche
Dec 17, 2014·Marine Pollution Bulletin·R PolmearA McMinn
Oct 7, 2020·Vascular·Daniele BissaccoSanti Trimarchi

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