Mobile phases for the determination of polarizable anions on polystyrene/divinylbenzene anion-exchange resinsстатья
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Дата последнего поиска статьи во внешних источниках: 26 июня 2019 г.
Аннотация:Anion-exchange resins have been prepared by chloromethylating 50%-crosslinked styrene-divinylbenzene copolymers (PS/DVB) followed by amination with trimethylamine. In addition to ion exchange, interactions with the anion-exchange matrix considerably contribute to the retention of polarizable anions on these sorbents. Additives in the eluent that can suppress adsorption sites of the stationary phase can decrease this effect. p-Hydroxybenzonitrile (0.15 mmol/L) in the eluent increases the NO 3 - peak efficiency from 820 to 5100 theoretical plates per meter.