DETERMINATION OF ULTRA-LOW CONTENT OF CARBON IN IRON BY ION-CHROMATOGRAPHY

被引：0
|
作者：
INOUE, R [1 ]
GOTO, R [1 ]
SUITO, H [1 ]
机构：
[1] TOA ELECTR LTD,DEPT ANALYT TECHNOL,SAYAMA 35013,JAPAN
来源：
MATERIALS TRANSACTIONS JIM | 1993年 / 34卷 / 06期
关键词：
ION-CHROMATOGRAPHY; CONCENTRATION; CARBON; OXYGEN GAS FUSION; IRON;
D O I：
10.2320/matertrans1989.34.528
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A study on the determination of ultra low content of carbon was made by using ion-chromatography, coupled with the combustion method in oxygen gas stream. The considerable increase in the variation of conductivity with the content of carbonate ion was observed because of the high ionic conductivity of OH- in the NaOH eluent. The Na+ (OH-) ion could be removed by a cation exchange column according to the reaction. R-H+ + NaOH-->R-Na+ + H2O. Therefore, carbonate ions in NaOH absorbent, which absorbed CO2 gas produced by the reaction of carbon in metal with oxygen gas, could be concentrated on the concentration column. It was found that 1.67 mass ppm of carbon in pure iron sample was determined within the accuracy of 0.24 mass ppm of standard deviation.
引用
收藏
页码：528 / 532
页数：5
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