Record Display for the EPA National Library Catalog

RECORD NUMBER: 131 OF 309

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
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
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
Abstract
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.)