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The main spectral parameters in NQR experiments are the fiansition frequencies of the nucleus and the line width A/. Pulsed NQR produces (nearly) single peak signals at specific frequencies that depend on the local structure around the observed atom and its chemical bonding, usually in a crystalline solid. Because the resonance frequency is almost unique to each compound, NQR exhibits great specificity for various analytes, notably ( N containing) explosives and narcotics. The most useful elements to monitor by NQR are " N, C1 and Cl. Since the NQR frequency depends on the electric field gradient at the nucleus under study, NQR data provides valuable information about the electronic structure of the molecules in the solid state. [Pg.111]

Professor Martel s book addresses specifically some of the more technical eispects of the risk assessment process, mainly in the areas of hazard identification, and of the consequence/effect analysis elements, of the overall analysis whilst where appropriate setting these aspects in the wider context. The book brings together a substantial corpus of information, drawn from a number of sources, about the toxic, flammable and explosive properties and effect (ie harm) characteristics of a wide range of chemical substances likely to be found in industry eind in the laboratory, and also addresses a spectrum of dangerous reactions of, or between, such substances which may be encountered. This approach follows the classical methodology and procedures of hazard identification, analysing material properties eind... [Pg.22]


See other pages where Explosibility Information about specific chemicals is mentioned: [Pg.509]    [Pg.353]    [Pg.299]    [Pg.371]    [Pg.1970]    [Pg.29]    [Pg.1960]    [Pg.261]    [Pg.2882]    [Pg.277]    [Pg.87]    [Pg.278]    [Pg.146]    [Pg.2]    [Pg.160]    [Pg.151]   


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