Chemiluminescence chemical titration

Tetramethylammonium ozonide, 736 Tetramethyl-l,2-dioxetane (TMD) chemical titration, 1224 chemiluminescence, 1221, 1234 quantum yield standard, 1224, 1226 N,N, N, A -Tetramethyl-p-phenylenediamine hydrogen peroxide determination, 735, 631, 633... 

Because they lend themselves to studies using both photochemical and chemical activation, bimolecular reactions of vibrationally excited hydrogen halides have been more throughly investigated than any other family of reactions. The rate constants in Table 1.3 have been obtained by the laser-induced vibrational fluorescence technique and correspond to the sum of rate constants for reactive and inelastic processes. The main problem is to establish the atomic concentrations accurately. This is usually accomplished by gas-phase titration in a discharge-flow system, although photolysis methods have also been employed. To find the ratio of reaction to non-reactlve relaxation, product concentrations have to be observed. This has been done in relatively few cases. Some systems have also been studied using the infrared chemiluminescence depletion technique (see Section 1.5.1). These experiments supply relative rate data for removal from several vibrational levels, and, in favorable cases, also provide some information about the rotational-state dependence of these rates. 

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