高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (5): 694.

• 论文 • 上一篇    下一篇

悬浮体进样/氟化电热蒸发(ETV)/ICP-AES直接测定二氧化钛粉末中痕量钇

彭天右, 阎琴, 胡斌, 江祖成   

  1. 武汉大学化学系, 武汉 430072
  • 收稿日期:1999-07-21 出版日期:2000-05-24 发布日期:2000-05-24
  • 通讯作者: 彭天右(1969年出生),男,博士,讲师,主要从事无机陶瓷材料的合成与分析工作.
  • 基金资助:

    国家自然科学基金(批准号:29870522);国家教委博士点基金

Direct Determination of Trace Impurity Yttrium in Titantium Oxide Powder by Fluorination Assisted ETV-ICP-AES Using Slurry Sampling

PENG Tian-You, YAN Qin, HU Bin, JIANG Zu-Cheng   

  1. Department of Chemistry, Wuhan University, Wuhan 430072, China
  • Received:1999-07-21 Online:2000-05-24 Published:2000-05-24

PDF (PC)

被引次数

41

摘要： 以聚四氟乙烯(PTFE)悬浮体为氟化剂,悬浮体制样/氟化辅助电热蒸发(ETV)/ICP-AES直接测定TiO2陶瓷粉末中痕量杂质钇;考察了影响基体和待测元素的蒸发过程的各种因素;对比研究了待测元素和基体的氟化蒸发行为;实现了基体和待测元素的预分离,显着降低了基体效应。本法的检出限为0.26μg/L,相对偏差为3.8%(n=5,c=0.5mg/L).

关键词: 氟化电热蒸发(ETV), 悬浮体制样, ICP-AES, 痕量杂质钇

Abstract: By using a polytetrafluorethylene(PTFE) emulsion as fluorinating reagent, a method for fluorinating assisted eletrothermal vaporization (ETV)/ICP-AESdirect determination of trace yttrium in TiO2 ceramic powder has been proposed; the various facts which would affect the vaporization process between the matrix and the analyte were studied ; the fluorinating vaporization behavior of the matrix and the analyte both in slurry and in solution were investigated. Based on pre-separation between the matrix and the analyte, the matrix effect was reduced. On the optimum experiment conditions, the detection limit of the present method is 0.26μg/L; and the RSDis 3.8 % (n=5, c=0.5 mg/L). This method has been applied to directly determinate trace yttrium in two kinds of TiO2 powder without any chemical pretreatment.

Key words: Fluorination electrothermal vaporization, Slurry sampling, ICP-AES, Trace impurity yttrium

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