Record Display for the EPA National Library Catalog


Main Title Polarographic Determination of NTA.
Author Hoove, Thomas B. ;
CORP Author Environmental Protection Agency, Athens, Ga. Southeast Environmental Research Lab.
Year Published 1973
Report Number EPA-16020-EWE; 13665,; R2-73-254
Stock Number PB-222 940
Additional Subjects ( Acetic acid ; Polarographic analysis) ; ( Nitriles ; Polarographic analysis) ; ( Water analysis ; Polarographic analysis) ; Sea water ; Bismuth organic compounds ; Metal complexes ; Indium organic compounds ; Acetates ; Aqueous electrolytes ; Water pollution ; Acetic acid/nitrilo-tri ; Pulse differential polarography ; Water pollution detection ; Interference(Chelation)
Library Call Number Additional Info Location Last
NTIS  PB-222 940 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 53p
Pulse differential polarography was found to be a more sensitive and precise method than linear sweep voltammetry for the determination of NTA as the bismuth complex in natural and waste waters. Indium was a less satisfactory complexant. Relative standard deviations of less than 5% were obtained by the dual cell pulse differential technique at 1 ppm NTA and calibrations were linear from 0.01 to 4 ppm. Copper caused low analytical results for NTA. No other significant interference by metals or complexants was found. An acetate electrolyte was much better than chloride for the determination of bismuth-NTA complex in sewage-type samples. Recommended procedures are given in the appendix. (EPA)