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- W2021001540 abstract "A simple dispersive liquid–liquid microextraction methodology based on the application of 1-hexylpyridinium hexafluorophosphate [HPy][PF6] ionic liquid (IL) as an extractant solvent was proposed for the preconcentration of trace levels of zinc as a prior step to determination by flame atomic absorption spectrometry (FAAS). Zinc was complexed with 8-hydroxyquinoline (oxine) and extracted into ionic liquid. Some effective factors that influence the microextraction efficiency such as pH, oxine concentration, amount of IL, ionic strength, temperature and centrifugation time were investigated and optimized. In the optimum experimental conditions, the limit of detection (3 s) and the enhancement factor were 0.22 μg L−1 and 71, respectively. The relative standard deviation (RSD) for six replicate determinations of 13 μg L−1 Zn was 1.92%. In order to validate the developed method, a certified reference material (NIST SRM 1549) was analyzed and the determined values were in good agreement with the certified values. The proposed method was successfully applied to the trace determination of zinc in water and milk samples." @default.
- W2021001540 created "2016-06-24" @default.
- W2021001540 creator A5006958149 @default.
- W2021001540 creator A5050589575 @default.
- W2021001540 date "2009-09-01" @default.
- W2021001540 modified "2023-10-10" @default.
- W2021001540 title "A novel microextraction technique based on 1-hexylpyridinium hexafluorophosphate ionic liquid for the preconcentration of zinc in water and milk samples" @default.
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- W2021001540 doi "https://doi.org/10.1016/j.aca.2009.07.040" @default.
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