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Natural attenuation characteristics and comprehensive toxicity changes of C9 aromatics under simulated marine conditions 被引量:1
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作者 Dawei Li Jiangyue Wu +2 位作者 Jiaqi Liu Aifeng Li Fanping Meng 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2021年第11期26-35,共10页
Microcosmic experiments were performed under a simulated marine environment to investigate the natural attenuation of C9 aromatics using nine components(propylbenzene,isopropylbenzene,2-ethyltoluene,3-ethyltoluene,4-e... Microcosmic experiments were performed under a simulated marine environment to investigate the natural attenuation of C9 aromatics using nine components(propylbenzene,isopropylbenzene,2-ethyltoluene,3-ethyltoluene,4-ethyltoluene,1,2,3-trimethylbenzene,1,2,4-trimethylbenzene,1,3,5-trimethylbenzene,and indene).This research aims to assess the contribution of biodegradation and abiotic activity to total attenuation of C9 aromatics and ascertain the changes in the comprehensive toxicity of seawater in the natural environment.The process of natural attenuation indicates the agreement with pseudo-first-order kinetics for all nine components in microcosmic experiments.The half-lives of the nine main compounds in C9 aromatics ranged between 0.34 day and 0.44 day under optimal conditions.The experiments showed that the natural attenuation of nine aromatic hydrocarbonsmainly occurred via abiotic processes.Seawater samples significantly inhibited the luminescence of P.phosphoreum(the luminescence inhibition ratio reached 100%)at the beginning of the experiment.In addition,the toxicity declined slowly and continued for 25 days.The attenuation kinetics and changes in toxicity could be applied to explore the natural attenuation of C9 aromatics in the marine environment. 展开更多
关键词 c9 aromatics Reaction kinetics MARINE MICROCOSM Toxicity changes
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