Record Display for the EPA National Library Catalog


Main Title Determination of Total Organic Halide in Water: A Comparative Study of Two Instruments.
Author Reckhow, D. A. ; Hull, C. ; Lehan, E. ; Symons, J. M. ; Kim, H. S. ;
CORP Author Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab. ;Massachusetts Univ., Amherst. Dept. of Civil Engineering. ;Atmospheric Environment Service, Downsview (Ontario).
Publisher c1990
Year Published 1990
Report Number EPA/600/J-90/497;
Stock Number PB91-196360
Additional Subjects Potable water ; Chlorination ; Disinfection ; Performance evaluation ; Chemical analysis ; Fulvic acids ; Chlorine organic compounds ; Bromine organic compounds ; Byproducts ; Iodides ; Comparison ; Statistical analysis ; Bias ; Contaminants ; Reprints ; Total organic halide analyzers
Library Call Number Additional Info Location Last
NTIS  PB91-196360 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
Total organic halide (TOX) analyzers are commonly used to measure the amount of dissolved halogenated organic byproducts in disinfected waters. Because of the lack of information on the identify of disinfection byproducts, rigorous testing of the dissolved organic halide (DOX) procedure for method bias is not always possible. The note presents the results of a brief study comparing two commercial TOX analyzers with neutron activation. The purpose was to determine if differential bias exists between the two analyzers, and to determine analyte recovery of adsorbed disinfection byproducts. Disinfection byproducts of aquatic fulvic acid were prepared using the following disinfectants: chlorine, bromine, and monochloramine. Analysis of the samples indicated that the two commercial TOX analyzers gave similar results. Neutron activation analysis suggested that organic chlorine recovery from the activated carbon adsorbent was complete, however, results with organic bromine recovery were inconclusive. Additional tests indicated that one of the TOX analyzers is subject to significant interferences from inorganic iodide. (Copyright (c) 1990 Gordon and Breach, Science Publishers, Inc.)