Speciation of arsenic of liquid and gaseous emissions from soil in a microcosmos experiment by liquid and gas chromatography with inductively coupledplasma mass spectrometer (ICP-MS) detection

Gas chromatography and high-performance liquid chromatography coupled to a double focusing sectorfield ICP-MS as sensitive element specific detector a re used for the speciation of arsenic of liquid and gaseous emissions from soil samples, which were equilibrated in a microcosmos experiment. Speciati on of liquid samples was performed by HPLC and hydride generation was used as introduction system to ICP-MS. An online prereduction step was introduce d to enhance the sensitivity for As(V). A home-built and laboratory-ready t ransfer line from GC to ICP-MS is presented and quantification of As in gas eous emissions was performed by external calibration via hydride generation . The microcosmos experiment revealed only low production rates of organoar senic compounds and reflected a limited capability of the biovolatilization experiment for the simulation of natural systems.