Using of Acetylacetone-formaldehyde Reagent in Spectrophotometric Determination of Aniline in Various Water Samples

A simple and accurate spectrophotometric method for the estimation of aniline in various water samples was done. The method was based on the condensation reaction of acetyl acetone-formaldehyde(AC-FA) reagent with aniline. to produce a yellow colored product, with maximum absorption at 417 nm, which has good stability at room temperature and it is very soluble in water (the medium of reaction). Beer's law is applied in the concentration range of 2.5 to 50 µg. ml-1 of aniline with a molar absorptivity 3.864×103 l.mol-1.cm-1 and Sandell's sensitivity index 0.0241 µg.cm-2 , a relative error of – 0.51 to +4.15 % and a relative standard deviation of ±0.78 to ±1.28% depending on the concentration level. The study also included the effect of organic compounds on the recovery of aniline in water samples. Aniline is the simple type of primary aromatic amines as it enters into many industrial fields and is considered as an important material. Aniline regarded as major pollutant of water, thus, its estimation was studied in different samples of water such as river, tap and Zamzam well waters.