title: Copper-complexation index as a polarographic summation parameter for the determination of chelating agents in water.
abstract: Polarography of the copper(II)-complexes of chelating agents is shown to be a suitable basis for a summation parameter for the total concentration of these chemicals in water (expressed as the copper-complexation index). Using 12 chelating agents (ATMP, BAED, CDTA, DTPA, DTPMP, EDTA, EDTMP, EDTP, EGTA, HEDP, NTA, PBTC) all listed in DIN 38409-H26 and DIN 38413-P5 a satisfactory reproducibility of the method used was obtained. In addition several commercial tensides, detergents in washing and deliming products were investigated.
authors.affiliation: KSM-Analytik GmbH, Mainz, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Esser
authors.forename: B W
authors.initials: BW
authors.lastname: Wenclawiak
authors.forename: H
authors.initials: H
authors.lastname: Gabelmann