摘要
近代技术的发展对稀土分析的灵敏度和准确度提出愈来愈高的要求,用原子发射光谱法测定稀土氧化物中非稀土杂质时,利用载体分馏是普遍和有效的途径,一般可以使测定下限比直接光谱法降低约一个数量级,因此广为国内外分析工作者所采用。文献报导的载体有混合载体AgF-Ga_2O_3、
The influence of carriers on spectral intensities of none-rare earth elements, including Pb、Sn、Mn、Co、Ni、Bi Sb、V、Ti、Zn、Cd, in Sm_2O_3、Gd_2O_3、Y_2O_3 with DC are exitation has been investigated. Experimental results showed that order of carrier effect or shape of evaporative curves mainly depends on the property of carriers and almost independs on matrixs. The carriers such as Li Cl、NaCl、BaCl_2、 AgCl and KCl are better than others. NaCl carrier makes the evaporation rate of matrix Sm_2O_3 to increase within the small extent.In the presence of carbon powder the evaporation rate of rare earth matrix significantly increases. Because carbon powder reacts with Sm_2O_3 and produces SmO、Sm、SmC_2、Sm_2C_(3-x) in electrode, the SmO and Sm are evaporated into are plasma increasing the number and intensities of spectral lines of matrix.Therefore the selection of analytical lines of impurety is guite diffieult.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1989年第3期44-48,共5页
Spectroscopy and Spectral Analysis
