Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Flow Injection Analysis of Trace Hydrogen Peroxide Using an Immobilized Enzyme Reactor (Journal Version).
Author Hwang, H. ; Dasgupta, P. K. ;
CORP Author Texas Tech Univ., Lubbock. Dept. of Chemistry and Biochemistry.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Publisher c1986
Year Published 1986
Report Number EPA-R-812366; EPA/600/J-85/538;
Stock Number PB89-110464
Additional Subjects Hydrogen peroxide ; Chemical analysis ; Membranes ; Enzymes ; Chemical reactors ; Performance evaluation ; Fluorescence ; Monitoring ; Atmospheric composition ; Cation exchanging ; Acid precipitation
Library Call Number Additional Info Location Last
NTIS  PB89-110464 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/14/1989
Collation 14p
Sub-parts per billion (ppb) levels of aqueous hydrogen peroxide have been determined with a flow injection analysis system employing a single bead string reactor composed of horseradish peroxidase covalently bound to an aminated macroporous polymeric absorbent with glutaraldehyde and a passive cation exchange membrane reactor to alter pH. The chemistry relies on the peroxidase mediated oxidation of nonfluorescent p-hydroxyphenylacetate to its fluorescent dimer. The advantage of the system includes rapid throughout rates (40 samples/h), excellent detection limits (0.3 ppb H2O2) and large dynamic range of linear response (1 ppb - 1 ppm). However, the immobilized enzyme is not useful for the analysis of organic peroxides which act as inhibitors. (Copyright (c) Springer-Verlag, 1986.)