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
A miniaturized atomic emission spectrometer was constructed,using a tungsten coil as the electrothermal excitation source and a handheld CCD spectrometer as the detection device.The limits of detection for calcium and...A miniaturized atomic emission spectrometer was constructed,using a tungsten coil as the electrothermal excitation source and a handheld CCD spectrometer as the detection device.The limits of detection for calcium and strontium with this new instrument were 0.03 and 0.02 mg/L,respectively, while the upper linear dynamic range for calcium andstrontium were 1000 and 400 mg/L,respectively.The proposed method was applied to simultaneous determination of calcium and strontium in synthesized brine samples,and the analytical results were in good agreement with those by ICP-AES.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A miniaturized atomic emission spectrometer was constructed,using a tungsten coil as the electrothermal excitation source and a handheld CCD spectrometer as the detection device.The limits of detection for calcium and strontium with this new instrument were 0.03 and 0.02 mg/L,respectively, while the upper linear dynamic range for calcium andstrontium were 1000 and 400 mg/L,respectively.The proposed method was applied to simultaneous determination of calcium and strontium in synthesized brine samples,and the analytical results were in good agreement with those by ICP-AES.
