High Performance Liquid Chromatography for the Determination of Chelating Agents in Waste Water

Abstract In view of the widespread use of numerous chelating agents, studies have been performed to develop a high performance (ion‐pair) liquid chromatography for the selective analysis. 14 chelating agents (Amino‐tri‐methylenephosphonic acid (ATMP), N,N‐Bis(carboxymethylene)‐1‐aminoethene‐1,1‐diphosphonic acid (BAED), Cyclohexanedinitrilo‐(1,2)‐tetra acetic acid (CDTA), Diethyltrinitrilopentaacetic acid (DTPA), Diethylene‐triaminepenta‐(methylenephosphonic acid) (DTPMP), Ethylenediaminetetraacetic acid (EDTA), Ethylenediaminetetra‐methylenephosphonic acid (EDTMP), Ethylenediamine‐N,N,N′,N′‐tetra‐2‐propanol (EDTP), Bis(aminoethyl)‐glycolether‐N,N,N′,N′‐tetraacetic acid (EGTA), Hydroxyethene‐1,1‐diphosphonic acid (HEDP), N‐(2‐Hydroxyethyl)‐ethylene‐diamine‐N,N′,N′‐triacetic acid (HEEDT), Nitrilotriacetic acid (NTA), 2‐Phosphonobutane‐1,2,4‐tricarbonic acid (PBTC), and Triethylene‐tetramine‐hexaacetic acid (TTHA)) could be determined in waste water.