Preconcentration of Hydrophilic Organophosphorus Substances on a Hypercarb Adsorbentстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 7 июля 2021 г.
Аннотация:The sorption and desorption of a number of hydrophilic organophosphorus substances (alkylphosphonicand O-alkylalkylphosphonic acids, glyphosate, glufosinate, and aminomethylphosphonic acid) froman aqueous medium on porous graphitized carbon (Hypersep Hypercarb sorbent) was studied. It was shownthat the indicated analytes are quantitatively extracted on minicolumns of the size 30 × 2.1 mm at a solutionflow rate of 0.5–0.75 mL/min. For the effective desorption of alkylphosphonic acids, it was proposed to usea 0.5% aqueous solution of ammonium formate; for O-alkylalkylphosphonic acids, subcritical water at200°C; and for glyphosate, glufosinate and aminomethylphosphonic acid, a 1% ammonia solution in 80%methanol. Under these conditions, high concentration factors for analytes (90–150) can be achieved.