Spectrophotometric Determination of Microgram Quantities of (Ethylenedinitrilo)tetraacetic Acid with Bis(2,4,6-tripyridyl-s-triazine)iron(II).
B Kratochvil, MC White - Analytical Chemistry, 1965 - ACS Publications
B Kratochvil, MC White
Analytical Chemistry, 1965•ACS Publications[Fe (TPTZ) 2+ 2] atpH 4.5 to give iron (ll) EDTA, which is rapidly air oxidized to iron (lll)
EDTA. Trace amounts of EDTA can be quickly and simply determined by spectrophoto-
metric measurement of the decrease in concentration of Fe (TPTZ) 2+ 2. EDTA complexed
by transition metalsreacts only slowly, thereby permitting the determination of uncomplexed
reagent. The alkali and alkaline earth metals do not interfere. The method is applied to the
determinationof EDTA in urine.
EDTA. Trace amounts of EDTA can be quickly and simply determined by spectrophoto-
metric measurement of the decrease in concentration of Fe (TPTZ) 2+ 2. EDTA complexed
by transition metalsreacts only slowly, thereby permitting the determination of uncomplexed
reagent. The alkali and alkaline earth metals do not interfere. The method is applied to the
determinationof EDTA in urine.
[Fe (TPTZ) 2+ 2] atpH 4.5 to give iron (ll) EDTA, which is rapidly air oxidized to iron (lll) EDTA. Trace amounts of EDTA can be quickly and simply determined by spectrophoto-metric measurement of the decrease in concentration of Fe (TPTZ) 2+ 2. EDTA complexed by transition metalsreacts only slowly, thereby permitting the determination of uncomplexed reagent. The alkali and alkaline earth metals do not interfere. The method is applied to the determinationof EDTA in urine.
ACS Publications