[Study on fluorescent properties and application of the new reagent DCOBAQS with aluminium].
A new fluorometric method is reported for the determination of aluminium, based on the complex forming of 7-[(2,4-dicarboxymethyl-5-carboxybenezene)azo]-8-hydroxyquinoline-5-sulfonic (DCOBAQS) with aluminium. The complex was formed at pH 5.54 with lambda ex/lambda em = 510 nm/572 nm. A better line relationship curve was obtained over the range of 0-0.04 microgram.mL-1 Al(III), and the detection limit for Al(III) is 0.557 ng.mL-1. The method is applied to determination aluminium in tea with satisfactory results.
Wu
F
F
Institute of Applied Chemistry, Nanchang University, 330047 Nanchang.
Haung
J
J
D000535:Aluminum / Q000032:analysis*; D007202:Indicators and Reagents; D009942:Organometallic Compounds / Q000737:chemistry; D011804:Quinolines / Q000737:chemistry*; D015203:Reproducibility of Results; D013050:Spectrometry, Fluorescence; D013662:Tea / Q000737:chemistry*
C481357:7-((2,4-dicarboxymethyl-5-carboxybenezene)azo)-8-hydroxyquinoline-5-sulfonic; D007202:Indicators and Reagents; D009942:Organometallic Compounds; D011804:Quinolines; D013662:Tea; D000535:Aluminum