Fluorimetric determination of iron with 5-(4-methylphenylazo)-8-aminoquinoline in the presence of surfactants

✍ Scribed by Gui-Fa Yan; Guo-Rong Shi; Yi-Ming Liu

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 272 KB
• Volume: 264
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(92)85305-p

✦ Synopsis

Iron(III) reacts wrth 5-(4-methylphenylazoj&ammoqumolme

to form a fluorescent species The fluorescence emlsslon IS greatly enhanced m the presence of sultable micelies and this micellar fluorescence reactlon allows a convement fluorlmetrlc determmatlon of traces of Iron A detection hmrt of 10 ng ml-' of Fe(II1) was obtamed and the cahbratlon graph was rectilinear up to 700 ng ml-' of Fe(II1) The precision (relatme standard devlatlon) was found to be 2 5% at the 100 ng ml-' Fe0111 level The proposed procedure 1s highly selectme, and has been applied to the determmation of iron in some metallurgical samples without any preseparatlon Keywordr Nuorimetry, Iron