Environ. Sci. Technol. 2006, 40, 2156-2162
Size-Based Speciation of Natural Colloidal Particles by Flow Field Flow Fractionation, Inductively Coupled Plasma-Mass Spectroscopy, and Transmission Electron Microscopy/X-ray Energy Dispersive Spectroscopy: Colloids-Trace Element Interaction M . B A A L O U S H A , * ,† F . V . D . K A M M E R , ‡ M. MOTELICA-HEINO,§ M. BABOROWSKI,| C. HOFMEISTER,| AND P. LE COUSTUMER† University of Bordeaux 1, 33400 Talence, France, Department of Geological Science, Vienna University, 1090 Vienna, Austria, BRGM, Avenue Claude Guillemin, 45060, Orle´ans, France, and UFZ Center for Environmental Research, Leipzig-Halle, River Ecology Department, Magdeburg, Germany
Flow field flow fractionation (FlFFF), inductively coupled plasma-mass spectroscopy (ICP-MS), and transmission electron microscopy (TEM) coupled to X-ray energy dispersive spectrometry (X-EDS) are used in series for the first time to characterize colloids. Results demonstrate the utility of FlFFF-ICP-MS-TEM/X-EDS to relate physical properties (size) of colloids to their chemical properties (chemical composition, surface chemical composition, and colloids-trace elements association). Results suggest that the major part of natural organic matter (NOM) is concentrated in the fraction
