Synthesis and analytical application of a novel tetradentate N(2)O(2) Schiff base as a chromogenic reagent for determination of nickel in some natural food samples.
A novel sensitive chromogenic reagent, N,N'-bis(3-methylsalicylidene)-ortho-phenylene diamine (MSOPD), has been synthesized and used in the spectrophotometric determination of nickel. At pH 8, MSOPD can react with nickel ion at room temperature to form a 1:1 complex. The apparent molar absorptivity is 9.5x10(4)lmol(-1)cm(-1) at 430nm. Beer's low is obeyed over the range 0-1.0x10(-5)M of nickel with a detection limit of 1.36x10(-8)M. The relative standard deviation for measurement of 3.41x10(-6)M nickel is 1.3% (n=10). The method has successfully been applied to determination of trace amounts of nickel in some natural food samples.
Fakhari
Ali Reza
AR
Department of Chemistry, Shahid Beheshti University, Tehran, Iran.
Khorrami
Afshin Rajabi
AR
Naeimi
Hossein
H