Anion-exchange thin-layer chromatography of condensed phosphates BERGER et d1 have reported the separation of polyphosphates on thin layers of Biorex 5 ion exchanger. TANZER et a,? .2 have reported the separation of polypllosphates by anion-exchange thin-layer chromatograplly on polyethylene imine (PEI) impregnated Avicel coated thin layers. CERRAI et al." have found, in reversed-please chromatography of metals on paper treated with di-(z-etl~yll~exyl)ortl~ophospl~oric acid (HDEPA), that the quantity log( I /&!r;l -I) is related to the hydrogen ion concentration in the mobile phase. Furthermore, linear. relationships between -log [H+] and the RM value have been obtained with ion-exchange resin papers (ALBERTI ~1 L~J.~), zirconium pliospl,late paper (ALl3lzRTI tit al."), ammonium h.uigStOphOSph~te paper (PRASILOVA AND %XBESTA~) and alginic acid thin layers (COZZI et ~~1.7) etc. But there are a few such studies with respect to anions.
Condensed phosphates are one of the inorganic polymers (polyelectrolytes) and are the compounds of an homologous series with various numbers of phosphorus atoms per molecule. It is thought to be important and interesting to know the valency of condensed phosphates in solutions. So we reintroduce the relationship between Rml and valency in ion-exchange chromatography, and using this relation, we obtain the apparent valency of condensed phosphates.