摘要
0.25g赤泥样品经3g氢氧化钠熔融20min,再用热水浸取和盐酸(1+1)溶液20mL提取,最后用水定容至250mL。采用电感耦合等离子体原子发射光谱法测定其中镧、铈、镨、钕、钪、钇等6种稀土元素的含量。6种稀土元素的质量浓度均在2.00mg·L^(-1)以内与其对应的发射强度呈线性关系,方法的检出限(3s)为0.001 8~0.042mg·L^(-1)。方法用于赤泥样品的分析,加标回收率为85.0%~105%,测定值的相对标准偏差(n=6)为0.24%~0.70%。
0.25 g of red mud sample was melted with 3 g of NaOH for 20 min and then was extracted with hot water and 20 mL of HCl（1＋1）solution.Finally the solution was diluted to 250 mL with water.The 6 rare earth elements,i.e.La,Ce,Pr,Nd,Sc and Y in the solution were determined by ICP-AES.Linear relationships between values of emission intensity and mass concentration of the 6 rare earth elements were kept in the same range within 2.00 mg·L^（-1）,with detection limits of the method（3 s）in the range of 0.001 8-0.042 mg·L^（-1）.The proposed method was applied to the analysis of red mud sample,giving values of recovery and RSD′s（n=6）in the ranges of 85.0%-105% and 0.24%-0.70% respectively.
出处
《理化检验（化学分册）》
CSCD
北大核心
2017年第11期1304-1307,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
中国铝业股份有限公司技术标准项目(ZY2016GZC01)
