Trace Determination of Lead, Chromium and Cadmium in Herbal Medicines Using Ultrasound‐Assisted Emulsification Microextraction Combined with Graphite Furnace Atomic Absorption Spectrometry

Abstract

The USAEME with GF-AAS procedure was shown to be an efficient, rapid, inexpensive and eco-friendly method for the determination of lead, chromium and cadmium in herbal medicines. Application of the USAEME method leads to an increased extraction efficiency with satisfactory precision in a short time using an extraction solvent volume at the microlitre level.