1. A green microextraction method in a narrow glass column for copper in artificial saliva extract of smokeless tobacco products.
- Author
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Arain, Sadaf S., Kazi, Tasneem G., Afridi, Hassan I., Naeemullah, null, Brahman, Kapil D., Arain, Muhammad B., Panhwar, Abdul H., Arain, Mariam S., and Baloch, Shahnawaz
- Subjects
EXTRACTION (Chemistry) ,SMOKELESS tobacco ,ATOMIC absorption spectroscopy ,ARTIFICIAL saliva ,COPPER compounds ,IONIC liquids ,CHEMICAL preconcentration - Abstract
A green non-dispersive ionic liquid based microextraction (ND-ILμE) method was proposed for the preconcentration of trace levels of copper (Cu 2+ ) in artificial saliva extract (ASE) of smokeless tobacco products (SLT). A 100 cm long, narrow glass column containing aqueous solution of Cu/ASE was used to increase phase transfer ratio by providing more contact area between two medium, which drastically improve the recovery of Cu-PAN complex into ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate [C 4 mim][PF 6 ]. At optimum experimental conditions, the detection limit and the enhancement factor were found to be 0.042 μg L −1 and 85, respectively. This method was successfully applied to real samples. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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