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本文以N_(205)-P_(507)-煤油-液体石蜡-HCl液膜体系分离富集了痕量Mn~(2+),五次提取分离,富集倍数可达87倍,回收率近于98％。与火焰原子吸收光谱法结合,可富集测定ppb级的Mn~(2+)。
In this paper, trace amount of Mn ~ (2+) was separated and enriched in N_ (205) -P_ (507) - kerosene-liquid paraffin-HCl liquid membrane system and extracted five times. The enrichment factor was 87 times. At 98%. In combination with flame atomic absorption spectrometry, ppb grade Mn 2+ can be enriched.