Humic substances as a background electrolyte in capillary electrophoresis
作者： M. Übner , M. Kaljurand , M. Lopp
DOI: 10.1080/02757540.2010.494157
关键词:
摘要: Humic substances (HS) as a background electrolyte in capillary electrophoresis afford the possibility to characterise HS/reagent interactions. Thus, added Pb(NO3)2 reveals specific characteristic regions electropherograms that correlate with salt concentration. These form because of on-capillary complexation Pb2+ HS: fulvic acid, hymatomelanic acid and humic acid. The formation two complexes (Pb/HS fractions I II), which have different mobility, was observed. Each HS contains those ratio. Differences apparently reflect structural differences fractions. peak areas both good linear correlation concentration injected Pb2+.
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