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Determination of mercury levels in environmental samples using 2-acetylfuran isonicotinoyl hydrazone by spectrophotometric method

V.Saleem Basha, S.Vidyasagar Babu2, G.Narasimha3, K.Hussain Reddy*

2-acetylfuran isonicotinoyl hydrazone (AFINH) has been synthesized and proposed as a new chromogenic reagent for a rapid, simple, selective, direct and non-extractive spectrophotometric method is developed for the determination of mercury (II) in aqueous dimethyl formamide (DMF). The reagent gives deep yellowcoloured, 1:1 (M: L) complexwithmercury (II) in sodium acetate-acetic acid buffer medium of pH 5.5 at ëmax 365 nm. The colour reaction is instantaneous and the absorbance remains constant for about 12 hrs. The molar absorptivity ofmercury complex is 2.3 x 103 Lmol- 1 cm-1 and sandellÂÂ’s sensitivity are found to be 0.0888 µgcm-2. The method was successfully applied to a number of environmental, biological and soil samples. The results were comparable with those obtained by dithizone method. The proposed system produced satisfactory results for the determination ofHg (II). The results are quite encouraging and can bring awareness among the public.  2013 Trade Science Inc. - INDIA.