High pressure size exclusion chromatography (SEC) was coupled with an online inductively coupled plasma mass spectrometer (ICP-MS) to assess the macromolecular size dependence of metal complexation.  This system was applied in the assessment of storm event samples from four land uses: highway, urban, agricultural, and natural.  Al was associated with large macromolecules and Fe was associated with a broad range of molecular weights. Absorbance (?=254 nm) was used to detect organic matter (OM), which was primarily detected with molecular weights 3-6 kDa; Cu, Zn, and Ni were also detected in this same size range. Cr, Mn, Co, Ni, and Pb were commonly detected as dissolved constituents (<138 Da).   Only small shift in size associated complexations were observed during the storm.

Metal complexation by macro-molecules assessed with size exclusion chromatography and online inductively coupled plasma mass spectrometer

243rd National Meeting (2012)

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