摘要
本文系统研究了高精度热电离质谱测定铟同位素的方法,采用磷酸涂样技术,获得了强而稳定的In^+离子流,5种锢试剂中的平均^(113)In/^(115)In比值为0.044804±0.000055(2SD),由此比值计算的铟原子量为114.8185(2)比现行的114.82更为精密。
A method for the measurement of indium isotope in chemical reagents by high precision thermal ionization mass spectrometry has been studied. The strong and stable In^+ ion beam was obtained by using the technique of loading sample with H_3PO_4.The average ratio of ~113In/~115In for five indium reagents was 0.044804 with the precision of 0.05％, andthe calculated atomic weight of indium was 114.8185 which is more precise than 114.82 listed on the periodic table of the elements.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1992年第4期458-460,共3页
Chinese Journal of Analytical Chemistry
关键词
量同位素
热电离
铟原子量
Indium isotopes, Thermal ionization, Atomic weight of indium.
