Accession Number : AD0622726

Title :   A L.E.T. INDEPENDENT DOSIMETER BASED ON THE CHEMILUMINESCENT DETERMINATION OF H2O2,

Corporate Author : DEFENCE CHEMICAL BIOLOGICAL AND RADIATION LABS OTTAWA (ONTARIO)

Personal Author(s) : Armstrong,W. A. ; Humphreys,W. G.

Report Date : 21 APR 1965

Pagination or Media Count : 11

Abstract : A sensitive method for the determination of H2O2 based on the copper-catalyzed chemiluminescent reaction between luminol and H2O2 was developed. The integral luminescence measured with a modified spectrophotofluorometer was found to increase linearly with concentration for 3 x 10 to the 8 to 1.5 x 10 to the 5 M H2O2 solutions. This method was applied to the determination of H2O2 formed in irradiated water and it was shown that this system may be used as a dosimeter in the range 30 to 3 000 rads. The following values were obtained for the initial H2O2 yields: G(H2O2) = 1.22 = 0.07 for gammaradiation, 1.28 = 0.09 for 250 kVcp (105 KeV effective) X-radiation and 1.31 = 0.04 for 14 MeV neutrons. These results and those of other workers demonstrate that the initial yield of H2O2 in aerated water increases only by about 15% for an increase in radiation l.e.t. of 0.02 to 14eV/A. (Author)

Descriptors :   (*HYDROGEN PEROXIDE, LUMINESCENCE), (*DOSIMETERS, HYDROGEN PEROXIDE), (*LUMINESCENCE, DOSIMETERS), PHOTOCHEMICAL REACTIONS, WATER, CATALYSIS, COPPER, SPECTROSCOPY, GAMMA RAYS, HYDRAZONES, NITROGEN HETEROCYCLIC COMPOUNDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE