title: Speciation analysis of arsenic in landfill leachate.
abstract: As environmental impacts of landfill last from beginning of cell filling to many years after, there is an increasing interest in monitoring landfill leachate composition especially with regards to metals and metalloids. High-performance liquid chromatography (HPLC) coupled with inductively coupled plasma mass spectrometry (ICP-MS) has been applied to the speciation of arsenic in landfill leachates. The difficulty is related to the complexity and heterogeneity of leachate matrices. A soft sample preparation protocol with water dilution and filtration of leachates has proved to be sufficient for the achievement of identification and quantification of arsenic species without matrix effect. The cationic-exchange separation method developed has enabled the detection of six arsenic species (AsIII, MMA, AsV, DMA, AsB, TMAO) in different landfill leachates. The wide range of concentrations of arsenic species (from 0.2 to 250 microg As L(-1)) and their repartition illustrate the high variability of these effluents depending on the nature of the wastes, the landfill management, the climatic conditions and the degradation phase, to list a few. These results provide new information about the chemical composition of these effluents which is useful to better adapt their treatment and to achieve the risk assessment of landfill management.
authors.affiliation: Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, IPREM UMR 5254, Université de Pau et des Pays de l'Adour, Avenue de l'Université, 64000 Pau, France.
authors.forename: Marie
authors.initials: M
authors.lastname: Ponthieu
authors.forename: Pauline
authors.initials: P
authors.lastname: Pinel-Raffaitin
authors.forename: Isabelle
authors.initials: I
authors.lastname: Le Hecho
authors.forename: Laurent
authors.initials: L
authors.lastname: Mazeas
authors.forename: David
authors.initials: D
authors.lastname: Amouroux
authors.forename: Olivier F X
authors.initials: OF
authors.lastname: Donard
authors.forename: Martine
authors.initials: M
authors.lastname: Potin-Gautier
mesh_terms: D001151:Arsenic / Q000032:analysis* / Q000737:chemistry* / Q000145:classification; D002851:Chromatography, High Pressure Liquid; D007201:Indicator Dilution Techniques; D012037:Refuse Disposal; D018570:Risk Assessment
chemical_list: D001151:Arsenic