TRACER STUDIES WITH RADIOACTIVE OXYGEN-15 . EXCHANGE BETWEEN CARBON DIOXIDE AND WATER

被引：62

作者：

WELCH, MJ

LIFTON, JF

SECK, JA

机构：

[1] Edward Mallinckrodt Institute of Radiology, Washington University, School of Medicine, St. Louis

[2] Lindenwood College, St. Charles, MO

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1969年 / 73卷 / 10期

关键词：

D O I：

10.1021/j100844a033

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 kinetics of the reactions CO2 + H2O →k1 H2CO2 and HCO2- →k-2 OH- + CO2 were investigated by studying the exchange of oxygen-15 between carbon dioxide and water. The application of the 2-min half-life radioisotope allows the use of very small amounts of carbon dioxide. The exchange can therefore be studied over a wide pH range without addition of buffers which are known to interfere with the reaction rates. The rate constants obtained were slightly higher than the generally accepted values, and it was found that the rate constants are related to temperature by the equations ln (108k1) = 34.69 - 9252/T and ln (106k-2) = 48.08 - 12,720/T.

引用

页码：3351 / &

共 18 条

[1]

CLARK JC, 1967, NUCLEONICS, V25, P54

[2]

CUMMING JB, NASNS3107 NATL AC SC

[3] KINETICS OF CONVERSION OF BICARBONATE TO CARBON DIOXIDE [J].