自贡锂的同位素丰度研究

On the Absolute Abundance of Lithitim in Zigong Brine

摘要: 本文自制纯~6Li_2CO_3并用纯~7Li_2CO_3,经校准质谱测量求得质谱计的质量歧视效应的校正因数,从而对我国自贡锂测得其同位素的绝对丰度为:7.50(±0.08)原子％~6Li和92.50(±0.08)原子％~7Li,而锂原子量为6.9409±0.0007。

Abstract: With pure 'Li_2CO_3 and 'Li_2CO_3, a calibrated mass spectrometric measurement of the isotopic ratio of lithium occurring in Zigong, Sichuan has been carried out. The absolute isotopic abundance was found to be 7.50 (±0.08) atom％ 'Li and 92.50 (±0.08) atom％ ~7Li. The atomic weight of lithium is 6.9409±0.0007.