作者: Qun Xu , Masanobu Mori , Kazuhiko Tanaka , Wenzhi Hu , Paul R. Haddad
DOI: 10.1016/J.CHROMA.2003.10.017
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摘要: Abstract We introduced an approach to the ion chromatographic determination of common mono- and divalent cations including hydrogen demonstrated ability a C 30 column dynamically coated first with dodecylsulfate then 18-crown-6 ether separate by ion-exchange mechanism. Using ethylenediamine solution containing small concentration lithium at pH 6.2 as eluent, were eluted in order Li + 4 2+ symmetrical peaks. The conductivity vs. plots linear about three orders magnitude, from millimolar micromolar; detection limits all