RAMAN-SPECTROSCOPIC IDENTIFICATION OF CARBONIC-ACID

被引：33

作者：

FALCKE, H ^{[1
]}

EBERLE, SH ^{[1
]}

机构：

[1] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,W-7500 KARLSRUHE 1,GERMANY

来源：

WATER RESEARCH | 1990年 / 24卷 / 06期

关键词：

bicarbonate; carbonic acid; dehydration; hydrogen carbonate; kinetics; Raman;

D O I：

10.1016/0043-1354(90)90023-Y

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Raman spectra have been taken in the range of 900-1600 cm-1 from 1 M NaHCO3 solutions after rapid acidification with 3 M HCl to pH 0-1 in a continuous flow apparatus. The spectra show two bands at 1382 and 1280 cm-1 caused by CO2, and an intensive peak at 1017 cm-1 assumed to be caused by the COH stretching vibration of carbonic acid (H2CO3). Peak integrals of spectra taken at different reaction times showed a first order decrease as expected for the dehydration of H2CO3. The calculated rate constant was significantly higher than that in the literature. This is interpreted as a reaction acceleration by high ionic strength or concentration, respectively. © 1990.

引用

页码：685 / 688

页数：4

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