Oxygen, analysis for active

Analysis for active oxygen is necessary (treatment with hydrochloric acid and determination by the Bunsen method). 

This feasibility study shows that determination of pellet wt by fast neutron oxygen activation analysis can be used for quality assurance inspection of M34 primers. Either direct oxygen analysis, where a comparison standard (such as lucite) is used, or a ratio method, utilizing the Cu in the cup-anvil combination as an internal standard, can be applied. In general, the uniformity of production primers is quite satisfactory, as is usually the case where production procedures are standardized. It seems likely that the light pellet is one which has been improperly manufd and will probably be well below specifications in pellet wt. Production experience with such primers indicates that only one in 3x10s primers is expected to show low pellet wt therefore, one would not expect to find a reject in a small sampling. Nevertheless, detection and rejection of this one bad unit is critical for the prevention of weapon malfunctions and possible injuries to personnel... 

Figure 5.26. Effect of catalyst potential on the oxygen desorption activation energy, Ed, calculated from the modified Redhead analysis for Pt, Ag and Au electrodes deposited on YSZ.44,46 Reprinted from ref. 44 with permission from the Institute for Ionics.

GC-AAS has found late acceptance because of the relatively low sensitivity of the flame graphite furnaces have also been proposed as detectors. The quartz tube atomiser (QTA) [186], in particular the version heated with a hydrogen-oxygen flame (QF), is particularly effective [187] and is used nowadays almost exclusively for GC-AAS. The major problem associated with coupling of GC with AAS is the limited volume of measurement solution that can be injected on to the column (about 100 xL). Virtually no GC-AAS applications have been reported. As for GC-plasma source techniques for element-selective detection, GC-ICP-MS and GC-MIP-AES dominate for organometallic analysis and are complementary to PDA, FTIR and MS analysis for structural elucidation of unknowns. Only a few industrial laboratories are active in this field for the purpose of polymer/additive analysis. GC-AES is generally the most helpful for the identification of additives on the basis of elemental detection, but applications are limited mainly to tin compounds as PVC stabilisers. 

Yamada Y, Kawase Y (2006) Aerobic composting of waste activated sludge kinetic analysis for microbiological reaction and oxygen consumption. Waste Manage 26 49-61... 

FIGURE 7.8 Production of reactive oxygen intermediates by activated macrophages. Cells isolated from the livers of control (CTL) or toxicant (TOX)-treated mice were incubated with phorbol myristate acetate for 15 minutes at 37°C, followed by the indicator dye, DCFH-DA. After 15 minutes, the cells were analyzed for green fluorescence by flow cytometry on a Coulter Cytomics FC500 flow cytometer (Beckman Coulter). For each analysis, at least 10,000 events were collected and analyzed using CXP software. 

Nazaki, T N. Yatsurugi, N. Akiyana, and I. Imai Charged Particle Activation Analysis for Carbon, Nitrogen and Oxygen in Semiconductor Silicon. The 1968 International Conference Modem Trends in Activation Analysis, Gaithersburg, Maryland, October 7—11, 1968, Paper 8. 

An analysis for oxygen by neutron activation yielded 9.2% O (calculated 9.26% O by weight). PbPd02 is apparently unstable at temperatures above <—820°C, where a mixture of PbO and PbPd3 is obtained in place of PbPd02. 

Determination of Pellet Weight and of the Copper/Oxygen Ratio for Special Primers (from Ref 6) 14 MeV Neutron Activation Analysis (Weight in Grains)... 

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