Comparison of Oxidation Methods in Analyzing Total Organic Carbon |
총유기탄소 분석의 산화방법 비교 |
변주대1, 김태동1, 이석기2, 김현욱3, 김재령2 |
1안동대학교 2동일시마즈 3서울시립대학교 |
|
Abstract |
In analysis of total organic carborn (TOC), efficiency of organic oxidation is critical. There are two most
well-known methods to oxidize TOC in the analysis. They are the thermo-oxidation method, and the UV-persulfate
oxidation. In the thermo-oxidation method, organics in water samples is thermally oxidized to CO2
which is sequentially analyzed. In the UV-persulfate oxidation, organic material in water samples is photo-oxidized
in the presence of persulfate. In this study, oxidation efficiencies of these two different methods for TOC
quantification were compared by applying them to a number of water samples; some of them contained easily
degradable organic carbon and some of them did hardly-degradable organic carbons. As a result, the TOC values
quantified by the UV-persulfate method were about 10-20% smaller than those quantified by the thermooxidation
method. When the water samples with large amount of organics were analyzed for TOC, the difference
became larger.
|
Key Words:
TOC, Oxidation, 연소산화, UV-과황산 |
|