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TRACE METAL LOADING ON WATERBORNE SOIL AND DUST PARTICLES CHARACTERIZED THROUGH THE USE OF SPLIT-FLOW THIN CELL FRACTIONATION
Citation:
Magnuson*, M L., C A. Kelty*, AND K. C. Kelty*. TRACE METAL LOADING ON WATERBORNE SOIL AND DUST PARTICLES CHARACTERIZED THROUGH THE USE OF SPLIT-FLOW THIN CELL FRACTIONATION. Murray, R.W. (ed.), Analytical Chemistry. American Chemical Society, Washington, DC, 73(14):3492-3496, (2001).
Description:
The fate and transport of metallic pollutants through a watershed are related to the characteristics of undissolved solid particles to which they are bound. Removal of these particles and their associated pollutants via engineered structures such as settling ponds i one goal of storm water management, particularly in urban areas where storm events can cause the sudden rlease of these particles. In designing, operatin, and/or managing a storm water settling pond, it is useful to know under what conditions particles and their associated pollutants from a particular source can be effectively removed. Because the particles most often implicated in metal pollution have nominal diameters <50 um, Split-flow Thin Cell Fractionation (SPLITT) was investigated as a means of studying the metal loading as a function of particle sedimentation rate. Several diferse particle samples - soil, urban dust, and parking deck sweepings - were fractionated using this technique, and the metal loading qualtified with inductively coupled plasma-atomic emission spectrometry. The effect on metal distribution of simulated acid rain was investigated.