Abstract
In the present project, the magnetic nanoparticles were used in a type of an ionic liquid based micro-extraction to measure trace amounts of cadmium in different real samples containing environmental water samples, saliva and human hair. In the optimum condition, the recovery percentages for the real sample were about 94.5% to 101.3%, showing the designed method is suitable to be used for analyzing the real environmental and biological samples. The main parameters were evaluated and optimized as follows: pH was 2.5, the volume of ionic liquid was 150 µl, the amount of Fe3O4 magnetic nanoparticles was 50mg, the volume of the complexing agent was 12 µl, and the vortex time was 1 min and 2 min for ionic liquid, and magnetic nanoparticle distribution steps, respectively. Also, the volume of the medium was 10 to 20 ml.
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