A green microextraction method in a narrow glass column for copper in artificial saliva extract of smokeless tobacco products

다국어 초록 (Multilingual Abstract)

A green non-dispersive ionic liquid based microextraction (ND-ILmE) method was proposed for thepreconcentration of trace levels of copper (Cu2+) in artificial saliva extract (ASE) of smokeless tobaccoproducts (SLT). A 100 cm long, narrow glass column containing aqueous solution of Cu/ASE was used toincrease phase transfer ratio by providing more contact area between two medium, which drasticallyimprove the recovery of Cu-PAN complex into ionic liquid 1-butyl-3-methylimidazolium hexafluor-ophosphate [C4mim][PF6]. At optimum experimental conditions, the detection limit and theenhancement factor were found to be 0.042 mg L 1 and 85, respectively. This method was successfullyapplied to real samples.

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