Abstract
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.
Highlights
Aniline is an organic compound that has the formula C6H5NH2
Aniline is used to produce an important chemical compounds that are used in manufacturing of rubber, it is used in the preparation of phenylene diamine and diphenylamine, which are the most additives to rubber
Aniline is an important chemical substance used in manufacture the herbicides and fungicides that are used in extermination weeds and organisms having a destructive action to plants
Summary
Aniline is an organic compound that has the formula C6H5NH2 It consists of amino group which attached to one position of a phenyl group , it is the typical simple aromatic amine. Aniline is used to produce an important chemical compounds that are used in manufacturing of rubber, it is used in the preparation of phenylene diamine and diphenylamine, which are the most additives to rubber. Several aromatic amines compounds are identified to be toxic and are suspected to be one of the causes of cancer[7] especially for the workers who are in contact with these compounds. Many techniques or methods have been used in determination of aniline in various samples. The absorbance measurements have been done by JASCOV - 630 UV / Vis spectrophotometer (Japan), with 1cm matched glass cells. pH measurements have been done by using HANNA 211 pH-meter
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