Design of two channel flow cells for simultaneous determination of copper and iron.
Two compact double and serial flow cells were designed for simultaneous determination of trace copper and iron ions. 2-(5-Bromo-2-pyridylazo)-5-(N-propyl-N-sulfopropylamino)aniline(5-Br-PSAA) was used as a chromogenic reagent. 5-Br-PSAA reacted with Cu(II) and Fe(II) to form red chelate compounds and did not react with Cu(I) and Fe(III). Based on these characteristics, a three-lines flow system using two channel flow cells was assembled for the simultaneous determination of trace amounts of copper and iron and applied to the assay of ground water.
Sakai
T
T
Department of Applied Chemistry, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota 470-0392, Japan.
Maeda
Y
Y
Ura
N
N