Abstract：Abstract: A method for the determination of inorganic phosphorus in organic phase has been
developed. The organic phase was extracted back with a reverse extractant （ 100 g · L
Na 2 CO 3
solution ） . The ratio of each reverse extraction was 1:1 ， the time of the reverse extraction was 1
minute ， three times in a row ， and the temperature ranged from 25 to 30 ℃. The reverse extraction
rate of phosphorus is better than 98.0%. The phosphorus content in the reverse extraction solution was
determined by phosphomolybdenum blue colorimetry. The relative standard deviation of this method is
less than 10% ， and the recovery of standard addition is 96.3%～101.0%.
冯 硕. 铀、钼有机萃取剂中无机磷的分析方法研究[J]. 世界核地质科学, 2019, 36(03): 163-167.
FENG Shuo. Study on analytical method of inorganic phosphorus
in organic phase. , 2019, 36(03): 163-167.