title: Dissolved organic matter and estrogenic potential of landfill leachate.
abstract: The estrogenic potentials of leachate samples collected at Laogang Sanitary Landfill in Shanghai, China were measured together with the associated dissolved organic matter (DOM) in leachate samples. Over 99% of the DOM in fresh leachate was removed upon 3-7 years of landfill, leaving only DOM with strong fluorescent activity. Anoxic or aerobic treatment of landfill leachate can further degrade DOM of MW<300 Da and transform those with fluorescent activity of MW>10(5) Da to those of 2000-10(5) Da. Neither landfilling nor storage in anoxic pond effectively removed estrogenic potential of leachate. Fractionation test revealed that residual organic matters of MW 3000-14000 Da and of <600 Da with high UV254 contributed most of the estrogenic activities in leachate. Aerobic SBR treatment considerably reduced the estrogenic potential of these organic matters in leachate.
authors.affiliation: State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, China.
authors.forename: Fan
authors.initials: F
authors.lastname: Lü
authors.forename: Hua
authors.initials: H
authors.lastname: Zhang
authors.forename: Cheng-Hsuan
authors.initials: CH
authors.lastname: Chang
authors.forename: Duu-Jong
authors.initials: DJ
authors.lastname: Lee
authors.forename: Pin-Jing
authors.initials: PJ
authors.lastname: He
authors.forename: Li-Ming
authors.initials: LM
authors.lastname: Shao
authors.forename: Ay
authors.initials: A
authors.lastname: Su
mesh_terms: D001667:Binding, Competitive / Q000187:drug effects; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002850:Chromatography, Gel; D052244:Endocrine Disruptors / Q000633:toxicity*; D047628:Estrogen Receptor alpha / Q000187:drug effects; D004968:Estrogens, Non-Steroidal / Q000633:toxicity*; D011138:Polytetrafluoroethylene / Q000737:chemistry / Q000633:toxicity; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D052244:Endocrine Disruptors; D047628:Estrogen Receptor alpha; D004968:Estrogens, Non-Steroidal; D014874:Water Pollutants, Chemical; D011138:Polytetrafluoroethylene