POTENTIOMETRIC TITRATION OF SULFATE LIGNIN

被引：0
作者：
CHERNOBEREZHSKII, YM
DYAGILEVA, AB
机构：
来源：
COLLOID JOURNAL OF THE USSR | 1990年 / 52卷 / 06期
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中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The dependences of adsorption of OH- and H+ ions (DELTA-GAMMA) on the pH and concentration of electrolytes were obtained from data on the potentiometric titration of sulfate lignin in solutions of NaNO3, NaCl, Na2SO4, Ca(NO3)2, and CaCl2, and they demonstrate the significant specific adsorption of Cl-, SO4(2-), and Ca2+ ions on the sulfate lignin. Hypotheses were advanced concerning the presence of two types of sites on sulfate lignin responsible for specific adsorption of cations and anions, respectively. The ions are in the following orders with respect to the adsorption power: Cl- > SO42- > NO3-; Ca2+ > Na+.
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页码：1054 / 1057
页数：4
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