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《Chinese Journal of Spectroscopy Laboratory》 2003-06
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Determination of Trace Arsenic in Rice by Microwave Digestion-HG-AFS

MOU Ren-Xiang CHEN Ming-Xue YING Xing-Hua SHI Yong-Feng ZHU Zhi-Wei (Rice Product Inspection and Supervision Testing Center,Ministry of Agriculture, China National Rice Research Institute,Hangzhou 310006,P.R.China)  
Trace arsenic in rice was determined by microwave digestion-HG-AFS.The experimental conditions of microwave digestion of samples and of hydride generation atomic fluorescence spectrometry for determination were optimized.The effect of the medium acid and amount of reducing agent on determination of arsenic and the interference from element formed hydride compound and coexistent elements in rice were discussed.The detection limit was 0.04ng/mL.The method was used to determine arsenic in reference materials(rice flour,GBW 08502),which shows a good agreement with standard value.The RSD was 2.5%,and the recovery of lead was 93.9%-115.0%.
【Fund】: 农业部行业标准项目资助 (编号 :0 4 0 35 )
【CateGory Index】: TS210.7
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