【摘要】：0.25g赤泥樣品經(jīng)3g氫氧化鈉熔融20min,再用熱水浸取和鹽酸(1+1)溶液20mL提取,最后用水定容至250mL。采用電感耦合等離子體原子發(fā)射光譜法測(cè)定其中鑭、鈰、鐠、釹、鈧、釔等6種稀土元素的含量。6種稀土元素的質(zhì)量濃度均在2.00mg·L~(-1)以內(nèi)與其對(duì)應(yīng)的發(fā)射強(qiáng)度呈線性關(guān)系,方法的檢出限(3s)為0.001 8~0.042mg·L~(-1)。方法用于赤泥樣品的分析,加標(biāo)回收率為85.0%~105%,測(cè)定值的相對(duì)標(biāo)準(zhǔn)偏差(n=6)為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，

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