Author/Authors :
hachoumi, i. université hassan ii de casablanca - fstm - laboratoire de biochimie, environnement agroalimentaire, urac 36, Mohammedia, Morocco , benkaddour, s. université hassan ii de casablanca - fstm - laboratoire de biochimie, environnement agroalimentaire, urac 36, Mohammedia, Morocco , hiyane, h. université cadi ayyad - fps - laboratoire de chimie analytique moléculaire, Safi, Morocco , hiyane, h. université hassan ii de casablanca - fstm - laboratoire de biochimie, environnement agroalimentaire, urac 36, Mohammedia, Morocco , el antri, s. université hassan ii de casablanca - fstm - laboratoire de biochimie, environnement agroalimentaire, urac 36, Mohammedia, Morocco , lazar, s. université hassan ii de casablanca - fstm - laboratoire de biochimie, environnement agroalimentaire, urac 36, Mohammedia, Morocco
Abstract :
This work describes an analytical approach to achieve accurate simultaneous separation of alkylphosphonic acids (MPA, PPA and BPA) and inorganic anions (chloride, nitrate, sulfate and phosphate) in aqueous media by ion exchange chromatography with evaporative light scattering detector (IECELSD) under isocratic elution mode using Dionex Ion Pac (250 x 4 mm ID) column. Herein, we demonstrate that couples (MPA/PPA) and (MPA/BPA) can be separated by IEC because a net difference of apparent between these two couples was noted. The developed chromatographic system offers a successful method to give a good separation of a mixture of MPA, PPA, chloride, nitrate, sulfate and phosphate in aqueous media without baseline derive and interferences, and with good resolution. It can be applied to the direct analysis of aqueous matrix containing low levels of alkylphosphonic acids and high levels of inorganic anions (chloride 1000 mg/L, phosphate 1000 mg/L).
Keywords :
Alkylphosphonic acids , Inorganic anions , Simultaneous separation , Ion exchange chromatography
