Tenax Extraction as a Tool to Evaluate Desorption of Sediment- Associated Polycyclic Aromatic Hydrocarbons-Phenanthrene from Contaminated

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• 作者：Liu xianbinSun hannaTian shengyanJiang shengping
• 会议时间：2009-11-01
• 关键词：Tenax ; desorption ; PAHs ; sediment ; extraction
• 作者单位：Liu xianbin,Sun hanna,Tian shengyan(Tianjin Key Lab of Marine Resource & Chemistry, Tianjin University of Science & Technology, Tianjin, P. R. China, 300457)Jiang shengping(Tianjin Key Lab of Marine Resource & Chemistry, Tianjin University of Science & Te)
• 母体文献：第十三届世界湖泊大会论文集
• 会议名称：第十三届世界湖泊大会
• 会议地点：武汉
• 主办单位：中国环境科学学会
• 语种：chi

摘要

Transportation and bioavailability of sediment - associated contaminants are often controlled by the contaminants' desorbing behaviour.Desorption kinetics of polycyclic aromatic hydrocarbons (PAHs) from sediment in Tianjin were studied.The desorption kinetics data were generated using Tenax extraction and electrolyte extraction,and a first - order three - compartment kinetic model was fitted to the data.The values for the rapidly,slowly,very slowly desorbing fraction Fr,Fs,Fvs covered a range of 0.28,0.11,0.60 for phenanthrene during the Tenax extraction experiment,respectively.The values for Fr,Fs,Fvs were 0,14,0.08,0.77 for phenanthrene during the electrolyte extraction,respectively.Research results had shown that desorption from sediment in the Tenax extraction is faster than that in electrolyte extraction.