There is scarce information concerning the study of detection
enhancement provided by NADES. Karimi et al.reported lower
limits of detection in the presence of NADES with same detector
(Electrothermal Atomic Absorption Spectrometry) and similar pretreatment
technique (Dispersive Liquid-Microextracion). The
enhancement factors, defined as the ratio of the slope of the calibration
curves with and without preconcentration, were better in
the presence of NADES for lead and cadmium.