“…However, UV-Vis spectrophotometric methods were widely used owing to their sensitivity, rapidity, low cost, simplicity, good selectivity and wide applications. So, various analytical reagents such as; propionylpromazine phosphate [12], 4-methyl-7-hydroxycoumarin [13], 1, 3-o-hydroxyphenyl-5-phenylformazan [14], naphthol green B [15], hydrazinecarboxymide2-[(2-hydroxyphenyl) methylene [16], sulphanilic acid [17], arsenazo-III [18], 2,4-Dimethyl pentan-3-one [19] were used for the spectrophotometric determination of cerium.…”