Selective light scattering

The first relationship can be used to predict the optimum particle size of white pigments (Table 7). The second relationship explains, for example, how white pigments in gray color mixtures can produce colored undertones as a result of selective light scattering (see Section 1.3.2). 

Colored pigments the optical effect is caused by selective light absorption and also to a large extent by selective light scattering (examples iron oxide red and yellow, cadmium pigments, ultramarine pigments, chrome yellow, cobalt blue)... 

In Reference 146 three methods for playback of data are presented, which are superior to the usual method based on the contrast in light scattering readout of dichroism, perpendicular readout mode, and readout of birefringence. Some critical comments also are given about global or selective erasure of data. 

In-stock opacity Plume opadty Selective opadty (for fine partides) Optical transmissometer Lidar (light detection and ranging) Extractive with light-scattering determination... 

Select the detector. To acquire molecular weight distribution data, use a general detector such as a refractive index detector. To acquire structural or compositional information, employ a more selective detector such as an ultraviolet (UV) or infrared (IR) detector. Viscometric and light-scattering detectors facilitate more accurate molecular weight measurement when appropriate standards are not available. 

Recently, the detection of UV-transparent alkanemonosulfonates without ion pairing is made feasible by a light-scattering detector (LSD) [32]. The optimized selectivity for the separation of alkanemonosulfonates by chain length using LSD is shown in Fig. 15. The separation of the isomeric tetradecanemonosulfonates is exemplified in Fig. 16. 

Cyvin, S. J., Rauch, J. E. and Decius, J. C. (1965) Theory of hyper-Raman effects (nonlinear inelastic light scattering) selection rules and depolarization ratios for the second-order polarizability. 

Coquet, A., Veuthey, J.-L., and Haerdi, W., Comparison of post-column fluorescence derivatization and evaporative light-scattering detection to analyse saccharides selectively by LC, Chromatographia, 34, 651, 1992. 

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