Analytical Chemistry

Figure 11.15 Schematic representation of the variation of power supply to the sample and reference in DSC. Figure 11.16 Schemati ...

Figure 11.17 Power-compensated differential scanning calorimetry (DSC) apparatus (S = sample; R = reference). the two heaters (∆ ...

Figure 11.18 Comparison of DSC and DTA for CuSO 4 .5H 2 O. measurement of enthalpy changes and is thus the more satisfactory too ...

Instrumentation Quartz probes fitted with thermocouples to measure the temperature, and follow the movement of the sample. Linke ...

Figure 11.19 TMA expansion study of an epoxy printed circuit board showing the determination of the glass point (Tg). Dynamic Me ...

Figure 11.20 Schematic representation of a thermomechanical analyser (a) and (b) with various probe configurations (c). Instrume ...

Disadvantages Relatively poor reproducibility because of the dependence on accurately reproduced heating profiles and the use of ...

stantial attention is pyrolysis-gas chromatography (Py-GC). As the name suggests this technique uses gas chromatography to separ ...

instruments, GC-FT-IR is also being exploited in this way. An example of Py-GC-MS analysis is given in Figure 11.21 and of Py-GC ...

Figure 11.24 Comparison of pyrolysis times for Curie-point pyrolysis and furnace pyrolysis. Figure 11.25 A Curie-point pyrolyser ...

sample, typically 50 μg, is either placed on or encapsulated in the end of a pyrolysis wire composed of the appropriate ferromag ...

(2) A sample of silica packing material with 5 μm particles for use in liquid chromatography has been reacted with various silan ...

Wendlandt, W. W., Thermal Analysis (3rd edn), Wiley, 1986. Willard, H. H., Merritt, L. L., Jr., Dean, J. A. & Settle, F. A., ...

12 — Overall Analytical Procedures and Their Automation In Chapter 1 a general pattern for analytical procedures was introduced ...

A similar situation arises with a large metallurgical specimen although crushing and grinding is not possible. Sawing or drillin ...

Figure 12.1 Outline procedures for analysis of an organic material. and/or contaminated ('dirty') sample is to be analysed, a cl ...

Figure 12.2 Outline procedures for analysis of inorganic materials. 12.2— Examples of Analytical Problems and Procedures The cho ...

determination of the effect of the matrix and ...

reagents on the measurements made. The precision and accuracy of the procedure should then be assessed by the analysis of either ...

Table 12.1 Comparison of methods for the determination of fluoride in water samples Method Reagent Precision Accuracy (based on ...