The process of ultrasound-assisted dispersive liquid-liquid microextraction(USADLLME) was successfully applied for the extraction and preconcentration of trace copper from water samples,prior to flame atomic absorptio...
Ultrasonic assisted-acid leaching as a fast and accurate sample preparation method is coupled with tungsten coil electrothermal atomic absorption spectrometry(WC-ETAAS)for the determination of trace cadmium in rice.Th...