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，显著降低了基体效应．本法的检出限为０.２６ μｇ／Ｌ，相对偏差为 ３.８％（ｎ＝５， ｃ＝０． ５ ｍｇ／Ｌ）．
By using a polytetrafluorethylene(PTFE) emulsion as fluorinating reagent, a method for fluorinating assisted eletrothermal vaporization (ETV)/ICP-AES direct 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 RSD is 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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第5期694-697,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金!(批准号:29870522)
国家教委博士点基金
关键词
悬浮体制样
ICP-AES
痕量杂质
钇
二氧化钛陶瓷
Fluorination electrothermal vaporization
Slurry sampling
ICP-AES
Trace impurity yttrium
