电感耦合等离子体原子发射光谱法测定赤泥中6种稀土元素
发布时间：2019-05-22 06:37
【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%。
[Abstract]:0.25 g red mud sample was melted with 3G sodium hydroxide for 20 min, then extracted with hot water and extracted with hydrochloric acid (11) solution 20mL. Finally, the volume of 0.25 g red mud sample was fixed to 250 mL. Lanthanum, cerium, praseodymium, neodymium, Scandium were determined by inductively coupled plasma atomic emission spectrometry. The content of six rare earth elements, such as yttrium, was linearly related to the corresponding emission intensity in 2.00mg 路L ~ (- 1). The detection limit (3s) of the method was 0.001 ~ 0.042mg 路L ~ (- 1). The method has been applied to the analysis of red mud samples. The recovery is 85.0% 鈮，
本文编号：2482753
[Abstract]:0.25 g red mud sample was melted with 3G sodium hydroxide for 20 min, then extracted with hot water and extracted with hydrochloric acid (11) solution 20mL. Finally, the volume of 0.25 g red mud sample was fixed to 250 mL. Lanthanum, cerium, praseodymium, neodymium, Scandium were determined by inductively coupled plasma atomic emission spectrometry. The content of six rare earth elements, such as yttrium, was linearly related to the corresponding emission intensity in 2.00mg 路L ~ (- 1). The detection limit (3s) of the method was 0.001 ~ 0.042mg 路L ~ (- 1). The method has been applied to the analysis of red mud samples. The recovery is 85.0% 鈮，
本文编号：2482753
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