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研究了在十二烷基磺酸钠-正丁醇-正庚烷-水构成的阴离子型微乳液中,5-Br-PADAP与Fe(Ⅲ)的显色反应.显色反应可在室温下进行,最大吸收波长为555nm,表观摩尔吸光系数为8.06×10~4.可准确测定菱镁矿中的铁和汽油中的环烷酸铁.
The color reaction of 5-Br-PADAP with Fe (Ⅲ) was studied in anionic microemulsion consisting of sodium dodecyl sulfate-n-butanol-n-heptane-water.The color reaction can be carried out at room temperature , The maximum absorption wavelength of 555nm, the apparent molar absorptivity of 8.06 × 10 ~ 4. Accurate determination of iron in magnesite and naphthenic acid in gasoline.