Spectrofluorimetry - Cloud point extraction for the determination of cadmium and lead using Furosemide as a complexing agent
karbala journal of pharmaceutical sciences,
2015, Volume 6, Issue 9, Pages 39-49
AbstractIn this paper , describes a separation and Preconcentration method for the determination of cadmium(II) and lead (II) by spectrofluorimetric method after complexation with the Furosemide drug as a reagent using Triton X-114 as surfactant and quantitatively extracted into a small volume of the surfactant-rich phase after centrifugation. The optimum conditions, such as pH, concentration of reagent (drug) and surfactant (TritonX-114) , equilibration temperature and time on the cloud point extraction, were studied and optimized on the extraction efficiency. In this method limits of detection and quantification LOD and LOQ of Cd and Pb ion were (0.321,0.095) and (0.974,0.288) ng/mL respectively, and a linear calibration range of ( 6.75-50) ng/mL for Cd and (1.25-15) ng/mL for Pb . The proposed method has been successfully applied to the determination of Cd(II) ion , Pb(II) ion in milk samples with satisfactory results .
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