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      Applications of single-drop microextraction in analytical chemistry: A review

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      Trends in Environmental Analytical Chemistry
      Elsevier BV

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          Solvent microextraction into a single drop.

          An analytical technique is described which combines solvent extraction with gas chromatographic (GC) analysis in a simple and inexpensive apparatus involving very little solvent consumption. A small drop (8 μL) of a water-immiscible organic solvent, containing an internal standard, is located at the end of a Teflon rod which is immersed in a stirred aqueous sample solution. After the solution has been stirred for a prescribed period of time, the probe is withdrawn from the aqueous solution, and the organic phase is sampled with a microsyringe and injected into the GC for quantification. The observed rate of solvent extraction is in good agreement with a convective-diffusive kinetic model. Analytically, the relative standard deviation of the method is 1.7% for a 5.00-min extraction of the analyte 4-methylacetophenone into n-octane.
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            Review of nanomaterials as sorbents in solid-phase extraction for environmental samples

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              Ionic liquids in dispersive liquid-liquid microextraction

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                Author and article information

                Contributors
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                Journal
                Trends in Environmental Analytical Chemistry
                Trends in Environmental Analytical Chemistry
                Elsevier BV
                22141588
                March 2021
                March 2021
                : 29
                : e00113
                Article
                10.1016/j.teac.2020.e00113
                ede746a5-3f91-490a-b31f-ada983f5ebcf
                © 2021

                https://www.elsevier.com/tdm/userlicense/1.0/

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