| Summary: | 碩士 === 國立交通大學 === 環境工程系所 === 98 === This study is using a close-system algae toxic tests to evaluate the toxicity of chlorophenols and aldehydes combined effects. By using RA model to make predictions and comparison. Furthermore, using the Isobologram discusses the data which do not tally anticipated .
Mixture toxicity tests using 1:1 mixture of toxic units which are according to the ΔDO and the EC50 value. Because the end point of EC50 was different to Final yield and Growth rate, so the toxic units was not 1:1 for both of them. The results found out that there are11 tests fit the model predictions from 15 mixture toxicity tests which is base on the end point of ΔDO ,and the proportion was as high as 73.3%;but toxic units of final yield and growth rate differ too large, can not follow the predictions . However, because the slope of final yield and growth rate are relatively large, it enhanced the chances of antagonistic or additive. In addition, comparison of species showed that R.subcapitata had a higher predictive abilityr than Microtox.
For the unfitting tests, by using HPLC analysis found out that 3-Hydroxybenzaldehyd-e at 1.3 seconds emergences new substances. Comparing with single individual comparison found that when the base contains the nutritional value would show this one response, non-nutrient-based values were not. After some testing and found this as an oxygen reaction. This study should focused on the interaction between two chemical substances
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toxic effect, but in this case the result of HPLC analysis was not follow. so that in this study assessed the toxic mix of chemical substances toxic effects will be more complex.
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