 |
| Applications |
|
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Section Links: Application Notes l Method Development l Product Specialists |
|
|
Selection of a TOC Analyzer: Analytical Considerations
Industry: Environmental
Instrument: Apollo 9000 Total Organic Carbon (TOC) Analyzer, Phoenix 8000 Total Organic Carbon (TOC) Analyzer
The task of choosing a Total Organic Carbon (TOC) analyzer brings one to consider the many instruments currently on the market. This becomes more difficult when faced with understanding that Total Organic Carbon (TOC) analyzer manufacturers may use different oxidation techniques which could effect the analytical data. This article highlights some analytical differences between the two major Total Organic Carbon (TOC) oxidation techniques and offers suggestions for a process to base the choice upon the user’s unique needs.
Since the relationship between BOD, COD, and TOC was established in the late 1970s, Total Organic Carbon (TOC) analyzers have become an analytical backbone in many water treatment and quality control laboratories worldwide. Important environmental and pharmaceutical regulations such as US EPA’s Information Collection Rule and United State Pharmacopoeia (USP) TOC in Water for Injection (WFI) have only increased the importance of the measurement.
Over the years many Total Organic Carbon (TOC) analyzers have been introduced by various manufacturers which use different oxidation technologies. The development of different oxidation technologies were used to gain an analytical and marketing advantage against a competitive manufacturer. Currently, two major oxidation technologies dominate the Total Organic Carbon (TOC) market place: combustion and UV/persulfate. The late 1980s saw the start of a major debate between which technique was best suited for testing for Total Organic Carbon (TOC). This paper is designed to highlight the advantages and disadvantages of both techniques in a balanced and analytical manner. This will give users appropriate information to make an informed decision as to which technique serves their needs the best and explain disparities between the two techniques.
Applications
