DEVELOPMENT OF CADMIUM IN HUNAN RICE STANDARD SAMPLES FOR CALIBRATION

摘要：

　　To better solve the lack of linear standard material for calibration of rapid tester for heavy metal(RTHM),four kinds of cadmium in Hunan rice standard samples were developed.After preliminary analysis,the candidates were determined,and all samples were prepared by processing,screening,drying,crushing,mixing,secondary drying,packing,irradiation sterilization,homogeneity and stability test,joint determination.For all samples,graphite furnace atomic absorption spectrophotometry(GF-AAS)and inductively coupled plasma mass spectrometry(ICP-MS)were applied for homogeneity,stability test and joint determination.The results show that the cadmium content of standard samples were(0.14 ± 0.02),(1.13 ± 0.14),(2.68 ± 0.26),and(3.44 ± 0.28)mg/kg,respectively.

关键词： Cadmium standard sample homogeneity stability joint determination uncertainty

作者: Y.Ren E.M.Hu X.Zhu Y.Li Q. H. Li L. H. Peng

作者单位: Hunan Institute of Metrology and Test,Changsha,China Hunan Institute of Metrology and Test,Changsha,China;Hunan Normal University,Changsha,China Hunan Normal University, Changsha, China

会议类型: 国际会议

会议名称: 国际测量技术联合会(IMEKO)2017年国际测量技术研讨会

会议地点: 杭州

会议语种:英文

页码: 100-103

在线出版日期: 2017-09-04（万方平台首次上网日期，不代表论文的发表时间）