Summary
A considerable fraction of the refractory organic carbon in airborne particulate matter is to be attributed to humic-like substances (HULIS). Such atmospheric HULIS isolated from different air dust samples by a microscale extraction procedure were characterized by capillary electrophoresis (CE). For fractionation of HULIS the working conditions of the CE system were optimized using a borate buffer (pH 8.2), polyacrylamide (PAA) coated, fused-silica capillary and polyethylene glycol as sieving modifier. Using CE under optimized conditions, HULIS produced electropherograms showing well resolved and reproducible signals.
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Dedicated to Prof. Dr. W. Haerdi, Geneva, on the occasion of his 70th birthday
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Havers, N., Burba, P., Klockow, D. et al. Characterization of humic-like substances in airborne particulate matter by capillary electrophoresis. Chromatographia 47, 619–624 (1998). https://doi.org/10.1007/BF02467443
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DOI: https://doi.org/10.1007/BF02467443