H. Wada, A. Yuchi, G. Nakagawa
1983
Citations
0
Influential Citations
10
Citations
Journal
Analytica Chimica Acta
Abstract
Abstract 1-(2-Hydroxy-3-sulfo-5-chloro-1-phenylazo)-2-naphthol-3,6-disulfonic acid is used in a spectrophotometric flow-injection system for the determination of magnesium (0.2–2.4 mg l −1 ) at a sampling rate of 80 h −1 . Interference of calcium is eliminated by using a barium-(II)—EGTA ligand buffer. Iron(III), aluminum(III), copper(II), zinc(II), manganese(II) and cadmium(II) are masked by cyanide and triethanolamine. The method is suitable for application to tap and pond waters.