Interface sample, schematic representation

Figure 2.5 Schematic representation of a loop-interface scheme for concunent eluent evaporation. The sample is first loaded in a loop and then, after switching the valve, directed by the caiiier into the GC column. The solvent evaporates from the front end of the liquid, thus causing band broadening. Since the column is not flooded, very large amount of liquid can be inti oduced.

FIG. 10 Schematic representation of the proposed surface model (a) the concentration and (b) the electrical potential profiles at the interface of the membrane and aqueous sample solution, x = 0 and 0 are the positions of ions in the planes of closest approach (outer Helmholtz planes) from the aqueous and membrane sides, respectively. (From Ref. 17.)... 

Figure 7.5 Schematic representation of a coupled SFE-HPLC system employing a recirculating extraction manifold interfaced to HPLC via a sample injection valve. After Lynch [54]. Reprinted from T. Lynch, in Chromatography in the Petroleum Industry (E.R. Adlard, ed.), J. Chromatography Library, 56, 269-303, Copyright (1995), with permission from Elsevier...

Figure 13. Schematic representation of the setup used for the infrared characterization of liquid-solid interfaces [63], The main cell consists of a platinum disk used for adsorption and reaction, a Cap2 prism for guidance of the infrared beam, and a liquid solution trapped between those two elements. The overall arrangement includes gas and liquid sample introduction stages as well as the electronics used for the electrochemical oxidation-reduction cycles needed to preclean the platinum surface.

Figure 6.3 (a) Schematic representation of equivalent circuit for an ion conductor put between a pair of blocking electrode, and (b) the corresponding Nyquist plot. Ideally the sample-electrode interface is composed only of the double-layer capacitance. However, the practical Nyquist plot that corresponds to this frequency region is not vertical to the real axis. The rate-limiting process of this plot is that the ion diffuses to form a double layer. 

Fig. 10.1 Schematic representation of a complete NeSSI system, illustrating the main components and the standard interfaces outlined in the NeSSI specification document. Also shown are the relationship between the NeSSI system and the sample and data process connections.

Fig. 7.36 Top panels Schematic representation of the sample used to investigate hydrogen diffusion from a slow medium to a fast medium. Hydrogen enters the sample via the Pd dot in the lower half of the sample, 1.5 mm away from the interface. Photographs Each image covers a 5.6 x 4.5 mm area of the sample. They are recorded in reflection 32, 110, 216 and 442 min and af-...

FIGURE 8.3 Schematic representation of an elution-head based interface. It comprises a sharp edge, which effectively seals the sampled area. 

Figure 7.10 Schematic representation of the partial current versus potential curves for the transfer of primary ion, I (curve 1), and interfering ions, J, with different Ej values (curves 2-4) across the sample solution/membrane interfaces. Curves 5-7 represent the total current versus potential relationships corresponding to curves 2-4, respectively. The curves are calculated using equations (7.4.2) and (7.4.3). See also reference (47).

Figure 5.11 t(a) Schematic representation of (ill) interphase and local scale (b) LS and SANS the hierarchical structures that develop during profile in the late stage of SD for a DPB/HPI the late stage of spinodal decomposition (SD) sample. Reproduced with permission from (i) global, (II) asymptotic (or interface), and Reference [89]. 

Scheme II. Direct space representation of the STM interface. The junction is composed of two adjacent metallic blocks. Each block is divided into characteristic subparts that are stacked along the Z direction Sample bulk, Sample surface, Tip apex and Tip bulk. For clarity, ethylene molecules are schematically drawn at the sample surface on an Ag-oxide overlayer. White, black, light and dark grey circles depict C, H, Ag and O atoms respectively. The tip is composed of a W 111 surface upon which a cluster of W is adsorbed to model the apex.

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