發(fā)布時間：2018-02-24 16:16

  本文關(guān)鍵詞： 電感耦合等離子體原子發(fā)射光譜法(ICP-AES) 氯化煙塵 鈧 鐵 鈦　出處：《冶金分析》2017年11期 　論文類型：期刊論文

【摘要】：準(zhǔn)確測定氯化煙塵中鈧、鐵、鈦的含量,對判斷鈧與鐵、鈧與鈦的分離程度,評價鈧的回收率有重要意義。實驗采用電感耦合等離子體原子發(fā)射光譜法(ICP-AES)對氯化煙塵中鈧、鐵、鈦的測定進行了研究。采用酸溶(鹽酸-硝酸-磷酸)和堿熔(氫氧化鈉)兩種方法處理氯化煙塵,并對兩種方法的鈧、鐵、鈦測定結(jié)果進行對比,結(jié)果表明,采用酸溶法步驟簡單易行,結(jié)果更準(zhǔn)確可靠。通過共存元素干擾試驗確定了鈧、鐵、鈦的測定譜線分別為335.372nm、259.940nm和334.188nm。酸度試驗表明,樣品溶液中磷酸的體積分?jǐn)?shù)在10%以下,對待測元素的干擾可忽略不計。方法中各元素校準(zhǔn)曲線線性回歸方程的相關(guān)系數(shù)均不小于0.999,鈧、鐵、鈦的檢出限分別為0.001 0%、0.002 8%、0.002 1%,測定下限分別為0.010 0%、0.028 0%、0.021 0%。按照實驗方法測定氯化煙塵樣品中的鈧、鐵、鈦的含量與光度法的結(jié)果基本一致,相對標(biāo)準(zhǔn)偏差(RSD)在1.1%~2.7%之間,回收率在93%~107%之間。
[Abstract]:The accurate determination of scandium, iron and titanium in chlorinated smoke dust is of great significance to judge the separation degree of scandium and iron, and to evaluate the recovery rate of scandium. ICP-AESs was used to determine the content of scandium and iron in chlorinated soot dust by inductively coupled plasma atomic emission spectrometry (ICP-AESs). The determination of titanium was studied. Chlorinated soot was treated by acid solution (hydrochloric acid, nitric acid phosphoric acid) and alkali melting (sodium hydroxide). The results of scandium, iron and titanium were compared. The results are more accurate and reliable. The spectral lines of scandium, iron and titanium are 335.372nm ~ 259.940nm and 334.188nm ~ (-1), respectively. The acidity test shows that the volume fraction of phosphoric acid in the sample solution is less than 10%. The correlation coefficient of linear regression equation of calibration curve of each element in the method is not less than 0.999, scandium, iron, etc. The detection limit of titanium is 0.002 8 and the lower limit of determination is 0.010 000 and 0.028 0 and 0.021 0 respectively. The contents of scandium, iron and titanium in chlorinated smoke samples are basically consistent with the results of spectrophotometry. The relative standard deviation (RSDs) is between 1.1% and 2.7%. The recovery was between 93% and 107%.
【作者單位】： 湖南稀土金屬材料研究院;
【分類號】：O657.31;X831
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本文編號：1530884