Characteristics of some common

APPENDIX 10 ELECTRONIC ABSORPTION CHARACTERISTICS OF SOME COMMON ... 

APPENDIX 8 P0LAR0GRAPHIC HALF-WAVE POTENTIALS 835 APPENDIX 9 RESONANCE LINES FOR ATOMIC ABSORPTION 837 APPENDIX 10 ELECTRONIC ABSORPTION CHARACTERISTICS OF SOME COMMON CHROMOPHORES 838... 

Characteristics of Some Common Solvents Used in Chromatography... 

Commercial silica gels are available with a wide range of properties. The characteristics of some common chromatographic packings are summarized in Table 4.3 (36). These data are taken mainly from the survey of Sander and Wise and are based on experimental determinations from a single batch of material. The... 

Figure 12.8. Transmission characteristics of some commonly used optical fibers, (a) glass fiber (b) gradient-index fiber (c) plastic-clad silica fiber (d) plastic fiber. (Reproduced with permission from the Ealing Corporation.)...

Table 1 Physical Characteristics of Some Commonly Used Gamma Radiation Emitters...

TABLE 7. Impact Characteristics of Some Common Explosives... 

Table 2.6 Newton number and stirrer geometric characteristics of some common stirrer types.

Table 9.1 Characteristics of some common zeolite framework topologies.

Some volatile aldehydes formed by autoxidation of unsaturated fatty acids are listed in Table 1. The aromas of aldehydes are generally described as green, painty, metallic, beany, and rancid, and they are often responsible for the undesirable flavors in fats and oils. Hexanal has long been used as an index of oxidative deterioration in foods. Some aldehydes, particularly the unsaturated aldehydes, are very potent flavor compounds. Table 2 fists aroma characteristics of some common aldehydes found in fats and oils (8). 

Absorption Characteristics of Some Common Organic Chromophores ... 

In fluorescence spectrometry, the intensity of fluorescence is proportional to the intensity of the radiation source (see Section 16.15). Various continuum UV sources are used to excite fluorescence (see below). But the use of lasers has gained in importance because these monochromatic radiation sources can have high relative intensities. Table 16.5 lists the wavelength and power characteristics of some common laser sources. Only those that lase in the ultraviolet region are generally useful for exciting fluorescence. The nitrogen laser (337.1 nm), which can only be operated in a pulsed mode (rather than continuous wave, or CW, mode), is useful... 

Table 4 Functional Characteristics of Some Common Food Proteins...

Application Characteristics of Some Common Thermocouple Alloys... 

Table 16.5 Characteristics of some common packings (after Perry, 1997)...

Table I. Characteristics of Some Common Clay Minerals...

We shall now deal with the spectral characteristics of some commonly encountered spin systems. 

Figure 4.18 IR absorption characteristics of some common solvents. Regions of strong IR absorbance in 0.1 mm cells (except water, 0.01 mm cell) are shown as shaded areas. Longer cell paths will broaden the regions of absorption and in some cases introduce new regions where absorption is significant. (Reprinted from Aikens et al. by permission from Waveland Press, Inc. Long Grove, IL, 1984. All rights reserved.)...

TABLE 11-29. CHARACTERISTICS OF SOME COMMON IRRITANT TOXIC GASES... 

Flames employed in AAS may be divided into two groups the combustion flames and diffusion flames. In fuel-oxidant mixtures, the temperature of the flame varies generally from 2000 to 3000 K. Air and dinitrogen oxide (N2O) are the most widely used oxidants, and acetylene, propane, and hydrogen are the most common fuel gases. In diffusion flames, the fuel is also the carrier gas and it burns on coming into contact with the outer diffusion air. The temperatures of the diffusion flames are lower than those of the combustion flames. The characteristics of some commonly used flames are given in Table 5. 

Table 2.1. Characteristics of some common detector materials...

Table 3.12 Flammability Characteristics of Some Common Solvent Vapors...

Above 2000 nm most of the materials show high reflectance. Figures 3A and 3B shows the reflectance characteristics of some commonly used materials. 

With different color-center crystals the total spectral range covered by existing color-center lasers extends from 0.65—3.4 xm. The luminescence bands of some color-center alkali halide crystals are exhibited in Fig. 5.79. Typical characteristics of some commonly used color-center lasers are compiled in Table 5.3 and are compared with some vibronic solid-state lasers. Recently room-temperature color-center lasers have been realized which are pumped by diode lasers [5.142]. 

Most coatings are formulated to be applied at ambient conditions of approximately 75°F/24°C and a 50% relative humidity. If ambient conditions are considerably higher or lower, it is conceivable that solvent release could pose a problem. This potential problem can be eased by changing the solvent balance. Generally, faster evaporating solvents should be used in colder weather and slower evaporating solvents should be used in hot weather. Classes and characteristics of some common solvents are shown in Table 12.4. 

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