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Investigation of Response Differences Between Different Types of Total Organic Carbon (Toc) Analytical Instrument Systems

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Abstract:Total organic carbon (TOC) and dissolved organic carbon (DOC) have long been used to estimate the amount of natural organic matter (NOM) found in raw and finished drinking water. In recent years, computer automation and improved instrumental analysis technologies have created a variety of TOC instrument systems. However, the amount of organic carbon (OC) measured in a sample has been found to depend upon the way a specific TOC instrument treats the sample and the way the OC is calculated and reported. Specifically, relative instrument response differences for TOC/DOC, ranging between 15 to 62%, were documented when five different source waters were each analyzed by five different TOC instrument systems operated according to the manufacturer's specifications. Problems and possible solutions for minimizing these differences are discussed.
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Citation:Potter, B. B., and J. C. Wimsatt. Investigation of Response Differences Between Different Types of Total Organic Carbon (Toc) Analytical Instrument Systems. Presented at ACS Meeting, Orlando, FL, April 11-15, 2002.
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Contact: Mary P. O'Bryant - (919)-541-4871 or obriant.mary@epa.gov
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Division: Microbiological & Chemical Exposure Assessment Division
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Branch: Chemical Exposure Research Branch
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Product Type: Abstrct/Oral
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Presented: 04/11/2002
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Related Entries:
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Bullet Item Develop New Total Organic Carbon/Specific UV Absorbance Method With Expanded Quality Control
spacer Relationship Reason:   A Project of the Product
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Last Updated on Monday, October 22, 2007
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