Multi-element determination of Cu, Fe, Ni and Zn content in vegetable oils samples by high-resolution continuum source atomic absorption spectrometry and microemulsion sample preparation

► Procedure based on emulsification for metals determination in vegetable oils. ► Fast alternative in relation to the traditional digestion procedures. ► Method does not require the sample to be subjected to any drastic pre-treatment. ► Method does not require the sample to be subjected to time-consuming pre-treatment.