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Contents:
A simple and rapid technique for the determination of copper based on air-assisted liquid-liquid microextraction and image colorimetric analysis
Magnetic solid-phase extraction and a portable photocolourimeter using a multi-colour light emitting diode for on-site determination of nitrite
Air-assisted liquid-liquid microextraction combined with flame atomic absorption spectrometry for determination of trace Pb in biological and aqueous samples
Air-assisted liquid-liquid extraction coupled with dispersive liquid-liquid microextraction and a drying step for extraction and preconcentration of some phthalate esters from edible oils prior to their determination by GC