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Methods development for total organic carbon accountabilityThis report describes the efforts completed during the contract period beginning November 1, 1990 and ending April 30, 1991. Samples of product hygiene and potable water from WRT 3A were supplied by NASA/MSFC prior to contract award on July 24, 1990. Humidity condensate samples were supplied on August 3, 1990. During the course of this contract chemical analyses were performed on these samples to qualitatively determine specific components comprising, the measured organic carbon concentration. In addition, these samples and known standard solutions were used to identify and develop methodology useful to future comprehensive characterization of similar samples. Standard analyses including pH, conductivity, and total organic carbon (TOC) were conducted. Colorimetric and enzyme linked assays for total protein, bile acid, B-hydroxybutyric acid, methylene blue active substances (MBAS), urea nitrogen, ammonia, and glucose were also performed. Gas chromatographic procedures for non-volatile fatty acids and EPA priority pollutants were also performed. Liquid chromatography was used to screen for non-volatile, water soluble compounds not amenable to GC techniques. Methods development efforts were initiated to separate and quantitate certain chemical classes not classically analyzed in water and wastewater samples. These included carbohydrates, organic acids, and amino acids. Finally, efforts were initiated to identify useful concentration techniques to enhance detection limits and recovery of non-volatile, water soluble compounds.
Document ID
19930003761
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Benson, Brian L.
(Alabama Univ. Huntsville, AL, United States)
Kilgore, Melvin V., Jr.
(Alabama Univ. Huntsville, AL, United States)
Date Acquired
September 6, 2013
Publication Date
April 30, 1991
Subject Category
Life Sciences (General)
Report/Patent Number
NAS 1.26:184438
NASA-CR-184438
Accession Number
93N12949
Funding Number(s)
CONTRACT_GRANT: NAS8-36955
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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