Static analysis

Whereas selective diffusion can be better investigated using classical dynamic or Monte Carlo simulations, or experimental techniques, quantum chemical calculations are required to analyze molecular reactivity. Quantum chemical dynamic simulations provide with information with a too limited time scale range (of the order of several himdreds of ps) to be of use in diffusion studies which require time scale of the order of ns to s. However, they constitute good tools to study the behavior of reactants and products adsorbed in the proximity of the active site, prior to the reaction. Concerning reaction pathways analysis, static quantum chemistry calculations with molecular cluster models, allowing estimates of transition states geometries and properties, have been used for years. The application to solids is more recent. [Pg.3]

Headspace Extraction Headspace (HS) extraction is a well-known method of sample preparation and is frequently used in many laboratories, especially in industrial applications. It involves a partitioning equilibrium between the gas phase and a sample (liquid or solid). In this technique, an aliquot of gas phase is sampled into GC. There are two types of analysis, static and d3Uiamic. In the static version, when the equilibrium is reached, the gas phase is injected into GC. In dynamic analysis, the volatiles are exhaustively extracted by the stream of gas. However, matrix effects result in decreased sensitivity for certain substances, especially polar and hydrophilic samples. A comprehensive book describing HS techniques was presented by Kolb [31]. [Pg.408]

Auf der Heyde, T. P. E., and Biirgi, H.-B. Molecular geometry of d five-coordination. 3. Factor analysis, static deformations, and reaction coordinates. Inorg. Chem. 28, 3982-3989 (1989). [Pg.728]

Accurate and Consistent Results of a combination of analysis techniques and reviews/inspections, including S/W safety analysis, static code analysis, compUe-time analysis, structured code walkthroughs and inspections. [Pg.301]

B8.4 Static Code Analysis Static code analysis is the analysis of the source code before it is executed. Techniques include ... [Pg.310]

See alsa Distillation. Enzymes Overview Enzyme-Based Electrodes. Food and Nutritional Analysis Antioxidants and Preservatives Alcoholic Beverages. Forensic Sciences Alcohol in Body Fluids Blood Analysis. Headspace Analysis Static Purge and Trap. Infrared Spectroscopy Overview. Optical Spectroscopy Refractometry and Reflectometry. Quality Assurance Quality Control. Sensors Amperometric Oxygen Sensors. [Pg.1168]

See also Air Analysis Sampling Workplace Air. Gas Chromatography Multidimensional Techniques High-Temperature Techniques High-Speed Techniques Online Coupled LC-GC Pyrolysis Detectors. Head-space Analysis Static Purge and Trap. [Pg.1874]

See also-. Gas Chromatography Environmental Applications. Headspace Analysis Static. Water Analysis ... [Pg.2058]

See also Activation Analysis Neutron Activation. Atomic Absorption Spectrometry Principles and Instrumentation. Atomic Emission Spectrometry Principles and Instrumentation. Chromatography Overview Principles. Gas Chromatography Pyrolysis Mass Spectrometry. Headspace Analysis Static Purge and Trap. Infrared Spectroscopy Near-Infrared Industrial Applications. Liquid Chromatography Normal Phase Reversed Phase Size-Exclusion. Microscopy Techniques Scanning Electron Microscopy. Polymers Natural Rubber Synthetic. Process Analysis Chromatography. Sample Dissolution for Elemental Analysis Dry... [Pg.3732]

See also Extraction Solvent Extraction Principles Solid-Phase Extraction. Fluorescence Environmental Applications. Gas Chromatography Mass Spectrometry Environmental Applications. Gravimetry. Headspace Analysis Static Purge and Trap. Immunoassays Overview. Infrared Spectroscopy Overview. Liquid Chromatography Overview. Sampling Theory. [Pg.5092]

From this list, only ICP-MS of a digested solution or when combined with LA or VPD, displays, superior detection limits compared to SIMS. It should be noted, however, that ICP-MS and VPD-ICP-MS are not trae probe-based techniques, i.e., these are not useful when concentration variations over micro-volume to nano-volume regions are of interest. Furtheamore, VPD-ICP-MS is a highly specialized technique developed specifically for the semiconductor industry. Of the micro-probe techniques, SIMS displays the highest elemental detection limits, whether used in the areas of micro-volume analysis/nano-volume analysis (both are forms of Dynamic SIMS) or surface analysis (Static SIMS). Optimal detection limits pertain to those noted from specific element-substrate combinations when examined under optimized conditions. [Pg.12]