Flow-injection spectrophotometric determination of gold using 5-(4-sulphophenylazo)-8-aminoquinoline

• Published in: Analytica chimica acta Vol. 401; no. 1; pp. 237 - 241
• Main Authors: Zuotao, Zeng, McCreedy, T, Townshend, Alan
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 29.11.1999; Elsevier
• Subjects: 5-(4-Sulphophenylazo)-8-aminoquinoline (SPA); Analytical chemistry; Chemistry; Exact sciences and technology; Flow injection (FI); Gold; Spectrometric and optical methods; Spectrophotometry; Gold; 5-(4-Sulphophenylazo)-8-aminoquinoline (SPA); Flow injection (FI); Spectrophotometry; Quaternary ammonium compound; Trace analysis; Chemical analysis; Gold Complexes; Cationic surfactant; Organic ligand; Visible spectrometry; Transition metal Complexes; Aqueous solution; Micellar solution; Flow injection

Gold (0–75 μg ml −1) was determined spectrophotometrically at 605 nm in a flow injection (FI) system based on the reaction of gold(III) and 5-(4-sulphophenylazo)-8-aminoquinoline (SPA) in the presence of cetyltrimethylammonium bromide (CTAB). The carrier stream was 1% (w/v) disodium ethylenediaminet...