单柱离子色谱法测定纸浆滤液中SO_4^(2-)、S_2O_3^(2-)

DETERMINATION OF SO_4^(2-) AND S_2Q_3^(2-) IN PULP BY SINGLE-COLUMN ION CHROMATOGRAPHY

采用单柱离子色谱法对纸浆滤液中的有害离子SO_4^(2-)、S_2O_3^(2-)进行测定.用lmmol·L^(-1)柠檬酸钠溶液作为淋洗液,在6min内完成分离测定.有良好的线性关系和重现性.标准回收率分别为99.82%和98.48%,共存离子基本不干扰测定.

A single-column ion chromatographic method for the determination of SO42- and S2O32- in pulp was studied. The separation is completed within 6 min using 1. 0 mmol·L-1 sodium citrate as an eluent. Good linearity and repeatability are obtained. The standard recoveries obtained are 99. 82% and 98. 48%. The common coexisting anions do not interfere with the determination of SO42- and S2O32-.