TCE remediation using in situ, resting-state bioaugmentation

Article Abstract:

Trichloroethene (TCE) is a persistent contaminant of groundwater. Various remediation methods such as pump-and-treat have been tested to remove TCE from groundwater, but their success have been limited by high remediation costs and long cleanup times. In situ bioremediation has been proposed as an alternative to these methods because of its potential to reduce remediation costs. A field test to determine the validity of in situ bioremediation has shown a 98% reduction of TCE concentrations in groundwater.

Methods, Bioremediation, Water, Underground, Groundwater

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Geographical distribution and accumulation features of organochlorine residues in fish in Tropical Asia and Oceania

Article Abstract:

A study has been conducted to determine the geographical distribution and concentrations of persistent organochlorine compounds in fish collected from several locations in southern Asia and Oceania. Results showed lower concentrations of residues in tropical fish than in fish of the temperate regions, despite the increased use of those compounds. There was also a lower accumulation of residues in tropical fish, with DDT and its derivatives as dominant residues.

Developing countries, DDT (Insecticide), DDT, Oceania, Tropical fish, Tropical fishes

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Influence of trophic position and feeding location on contaminant levels in the Gulf of Farallones food web revealed by stable isotope analysis

Article Abstract:

The relationship between trophic position and dietary patterns on the level of metal and organochlorine contamination of the food web in the Gulf of Farallones was investigated. By using stable isotope analysis on the egg albumken of four different bird species, a link was established between feeding location and contaminant level.

Research, Food chains (Ecology), Food chains, Farallon Islands

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