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环境化学  2015 

O3/UV降解喹啉过程中的毒性变化

Keywords: 喹啉,O3/UV降解,毒性,发光细菌

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Abstract:

利用发光细菌新鲜菌悬液进行毒性测试,研究了O3/UV降解喹啉过程中的毒性变化.研究表明,在选取的浓度范围内,无论是HgCl2/sub>还是喹啉,发光细菌发光抑制率(或相对发光量)与物质浓度的对数均呈线性关系.采用处于对数生长期初期的发光细菌进行毒性测试时的灵敏度和最低检测限都很理想,适合于毒性测试.O3/UV降解喹啉时,体系毒性出现先迅速上升并保持一段时间随后缓慢下降然后又缓慢上升的现象.O3/UV降解喹啉过程中产生了毒性更强的中间产物,这些产物是导致体系毒性上升的主要因素.

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