摘要
采用HF—HNO3混合酸作为消解试剂，建立了微波消解电感耦合等离子体原子发射光谱法（ICP—AES）测定二氧化钛中Si，Fe，Al，Ca，Cu，As，Pb等19种共存杂质元素的新方法。考察了微波消解参数、基体效应、共存元素干扰，分析谱线选择及仪器工作条件等参数，结果表明。基体钛和共存元素不干扰测定。因此在绘制工作曲线时不需要进行基体匹配。方法检出限较低。用于测定二氧化钛各杂质元素平均回收率为96％～106％，相对标准偏差（RSD）小于7．7％，与其他分析方法相对照，测定结果较为吻合。
A new method for the determination of 19 co-existing impurity elements in the TiO2 including Si, Fe,Al,Ca,Cu, As, Pb and so on by ICP-AES with microwave digestion has been established. The HFHNO3 mixed acid was used as digestive reagent. The operating parameters of microwave digestion, influences of matrix and co-existing elements, selection of the analytical spectral lines and working conditions of the instrument have been investigated. It has been shown that titanium as matrix and the co-existing elements don＇t interfere with the determination, so it need not to adopt matrix matching in preparation of calibration curve. The method with better detection limits has been applied to the determination of all these micro impurity elements in titanium dioxide with recoveries of 96% - 106% and RSD less than 7.7%, and the results were agreement with those of other methods.
出处
《冶金分析》
EI
CAS
CSCD
北大核心
2006年第2期57-60,共4页
Metallurgical Analysis
关键词
微波消解
电感耦合等离子体原子发射光谱
二氧化钛
杂质元素
microwave digestion
inductively coupled plasma-atomic emission spectrometry
titanium dioxide
impurity elements
