Flame and graphite furnace atomic absorption spectrometry for trace element determination in vegetable oils, margarine and butter after sample emulsification

摘要: Trace element analysis plays an important role in oil characterisation and the detection of adulteration because quality edible oils fats is affected by their trace metal content. In this study, quantification selected metals various (rice oil, canola sunflower corn soy olive light margarine, regular margarine butter) was carried out using flame atomic absorption spectrometry (FAAS) graphite furnace (GFAAS) after sample emulsification. FAAS used to determine Na, K, Ca, Mg, Zn Fe levels samples, while GFAAS for quantifying Cr, Ni, As, Pb, Cd, Cu Mn, as these elements appeared samples at much lower concentrations. Tween-80 Triton X-100 were employed surfactants, emulsions prepared a conventional method that involved heating mixing constituents. Complete stabilisation achieved through magnetic stirring 15 min room temperature. The evaluated figures merit linearity, accuracy sensitivity, which determined characteristic concentration mass. Analysis spiked demonstrated accuracy, ranged from 90% (Na) 112% (Fe) 83% (Cd) 121% (Pb) measurements. Atomic proved be promising approach emulsified fats. Additionally, under appropriate emulsification conditions (formulation, time temperature), homogeneous, had excellent stability, viscosity. proposed has simple, sensitive, reproducible, economical.