Determination of cadmium(II) ion by atomic absorption spectrometry after cloud point extraction

Abstract

In this work, cloud point extraction (CPE) technique was developed for the separation and pre-concentration of Cd(II). CPE was used with lipophilic hexadentate (N 4 O 2 ) Schiff base ligand, L 22pysa (1, C 24 H 26 N 4 O 2 ). The methodology is based upon the formation of a Cd(II)/L complex soluble in a micellar phase the non-ionic surfactant Triton X-114. This complex is then extracted into the surfactant-rich phase above its cloud point temperature. Several important variables that affect the CPE were investigated and optimized. Under the optimum experimental conditions, the calibration graph was linear over the range 1-100 ng mL -1 with a correlation coefficient of 0.9997. The detection limit obtained under optimum conditions was 0.44 ng mL -l . The proposed method was successfully applied to the determination of Cd(II) in rice and various water samples.

A Green Vortex-Assisted Ionic Liquid-Based Dispersive Liquid–liquid Microextraction Method for Preconcentration and Determination of Trace Cadmium in Food Samples

“…The comparative data of different analytical characteristics showed that the obtained LOD, EF, and RSD of the proposed method are much better than other reported preconcentration methods for Cd 2+ determinations [1,3,22,[31][32][33][34][35][36][37] (Table 6). These results demonstrated that the proposed VA-IL-DLLME procedure could be successfully applied to the analysis of different real samples without any systematic error.…”

Versatile sensing platform of an innovative copper oxide-assisted Cu-phenolic coordination nanosheet-mediated fluorophore-tagged GT-rich SSA-based fluorescence ON–OFF biosensor for the subsequent detection of Cd2+ and S2− ions

“…Extensive research has been reported for the detection of Cd 2+ and S 2À ions, using methods such as flame atomic absorption spectroscopy (FAAS), cold vapor atomic absorption spectroscopy (CV-AAS), inductively coupled plasma mass spectrometry (ICP-MS), etc. [7][8][9][10][11] However, the above methods have drawbacks in the form of research challenges, which include expensive equipment, long process times, high costs, etc.…”

Development of Cd (II) Ion Probe Based on Novel Polyaniline-Multiwalled Carbon Nanotube-3-aminopropyltriethoxylsilane Composite

“…In the past and even till now, several efforts have been expended on developing methods of Cd 2+ detection. These methods include atomic absorption spectrophotometry [12], inductively coupled plasma spectrophotometry [13], UV spectrophotometry [14], etc. These methods are sensitive and suitable for Cd 2+ detection; however, they suffer setbacks in their high cost of analysis, cumbersomeness in sample preparation and equipment operation, high time consumption, unsuitability for in situ analysis, etc.…”