Authors: Jian Li Mei Ma Qing Cui Zijian Wang
Publish Date: 2008/05/31
Volume: 80, Issue: 6, Pages: 492-496
Abstract
A battery of in vitro bioassays was conducted to assess the potential risks of organic extracts from oilfield produced wastewaters and from the receiving waters In SOS/umu bioassay for the genotoxicity our results showed that direct and indirect genotoxic substances were observed and metabolic activation greatly enhanced the genotoxic effects In EthoxyresorufinOdeethylase bioassay levels of AhRagonists expressed as 2378tetrachlorodibenzopdioxin equivalences varied from 133 to 167 pg L−1 We conclude that oilfield produced wastewater contains substantial quantity of indirect genotoxic substances exclusive of AhR agonists Both genotoxic and AhR agonistic chemicals could not be effectively removed by the treatment processes
Keywords: