【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¹¹³In/¹¹⁵In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。更多还原

【Abstract】 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 H₃PO₄.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.更多还原