Major ion toxicity of six produced waters to three freshwater species: Application of ion toxicity models and tie procedures
Major ion toxicity of six produced waters to three freshwater species: Application of ion toxicity models and tie procedures
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DOI：
10.1002/etc.5620161004
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发表时间：
1997-10-01
影响因子：
4.1
通讯作者：
Evans, JM
中科院分区：
文献类型：
--
作者：
Tietge, JE;Hockett, JR;Evans, JM
先前对主要离子对淡水生物急性毒性的研究导致了三种淡水物种（Ceriodaphnia dubia， Pimephales promelas和Daphnia magna）的统计毒性模型的发展。这些离子毒性模型利用逻辑回归估计七种主要离子的毒性。在本研究中，离子毒性模型与I期毒性鉴定评估（TIE）程序结合使用，评估了总盐度在1.7至58.1 g/L之间的6个采出水样的主要离子毒性对总毒性的贡献。将所有6个样本的初始毒性与模型预测进行比较。发现四种采出水的毒性与仅由主要离子浓度引起的毒性一致。发现两种采出水表现出比仅从离子浓度方面预期的更大的毒性。这些样品进行了第一阶段的TIE程序。通过特定的I期TIE操作，毒性降低到离子毒性模型预测的水平。模拟废水被用来验证结果。离子毒性模型与I期TIE程序的结合成功地量化了6个采出水样中主要离子的毒性。
Previous research to characterize the acute toxicity of major ions to freshwater organisms resulted in the development of statistical toxicity models for three freshwater species (Ceriodaphnia dubia, Pimephales promelas, and Daphnia magna). These ion toxicity models estimate the toxicity of seven major ions utilizing logistic regression. In this study, the ion toxicity models were used in conjunction with Phase I toxicity identification evaluation (TIE) procedures to evaluate the contribution of major ion toxicity to the total toxicity of six produced water samples ranging in total salinity from 1.7 to 58.1 g/L. Initial toxicities of all six samples were compared to the model predictions. Four produced waters were found to have toxicity consistent with toxicity attributable to major ion concentrations only. Two produced waters were found to exhibit more toxicity than expected from ion concentrations alone. These samples were subjected to Phase I TIE procedures. Toxicities were reduced by specific Phase I TIE manipulations to those predicted by the ion toxicity models. Mock effluents were used to verify the results. The combination of the ion toxicity models with Phase I TIE procedures successfully quantified the toxicity due to major ions in six produced water sample.