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...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.The limit of detection for cadmium was 6 pg,while the upper linear dynamic range was 40 ng/mL.展开更多
Abstract: Trace gold in geological samples was determined by electrothermal atomic absorption spectrometry after electrodeposition preconcentration on the tungsten coil used as a working electrode and atomizer.After g...Abstract: Trace gold in geological samples was determined by electrothermal atomic absorption spectrometry after electrodeposition preconcentration on the tungsten coil used as a working electrode and atomizer.After gold in sample was preconcentrated by foam,the foam was pyrolyzed.The electrolysis of gold was performed under at-700 mV(relative to a saturated Hg/Hg2Cl2 reference electrode) for 2 min.The limit of detection for the gold sample was 0.05 ng/g,while the upper linear dynamic range was 20 μg/L for gold standard slolution.展开更多
文摘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.The limit of detection for cadmium was 6 pg,while the upper linear dynamic range was 40 ng/mL.
文摘Abstract: Trace gold in geological samples was determined by electrothermal atomic absorption spectrometry after electrodeposition preconcentration on the tungsten coil used as a working electrode and atomizer.After gold in sample was preconcentrated by foam,the foam was pyrolyzed.The electrolysis of gold was performed under at-700 mV(relative to a saturated Hg/Hg2Cl2 reference electrode) for 2 min.The limit of detection for the gold sample was 0.05 ng/g,while the upper linear dynamic range was 20 μg/L for gold standard slolution.
