Notice of RetractionInvestigation of Feasibility of Bamboo Charcoal as Solid-Phase Extraction Adsorbent for the Enrichment and Determination of Metal Ions in Water Samples

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Bamboo charcoal conceivably has a higher enrichment capacity for heavy metal ions due to its microporos structure and large surface area. For the first time, the potential of bamboo charcoal to act as an adsorbent for the preconcentration of heavy metal ions in water samples was investigated. Cadmium and nickel were selected as the model analytes, and ICP-AES as the method for detection. Factors affecting the enrichment efficiency, such as the kind of eluent and its volume, flow rate, and pH were investigated and optimized. The limits of detection for cadmium and nickel are 0.3 and 0.5 ng mL^-1, respectively. There is good linearity (RS≥0.9998) in the range from 1 to 200 ng mL^-1. The relative standard deviations vary from 2.4 to 4.2% (n = 7). The method has been applied to the analysis of drinking water, and results indicate that bamboo charcoal has a large potential as a SPE adsorbent.