Analytical Chemistry

The potentiometric method also surpasses the others for speed, simplicity, precision and accuracy as indicated in Table 12.1. Fu ...

aromatic petroleum distillate 38% butyl cellosolve 10% water 30% mineral lubricating oil 13% oleic acid 8% ammonia 0.5% dyestuff ...

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A feature of this analytical scheme is the marked reliance on infrared spectrometry and titrimetry. The former is particularly a ...

Table 12.3 Characteristics of some trace metal techniques Technique Approximate operating range Relative precision Remarks ICP-A ...

HNO 3. ICP-AES showed a wide variety of elements to be present with a particular build-up of cobalt, nickel and zinc (50–100 ppm ...

produce ring compounds, alkane isomers and shorter chain alkanes and alkenes. The octane rating of the product is dependent upon ...

Figure 12.4 Gas chromatogram of the products obtained from n-hexane when passed over a SiO 2 /Pt catalyst at 450°C. Column: 50 m ...

Figure 12.5(a) Mass spectrometric confirmation of peak 11 as methyl cyclopentane. mical constituents of a sample. The chief area ...

Figure 12.5(b) Mass spectrometric confirmation of peak 12 as benzene. example, an automatic pipette may be used for sampling; a ...

Figure 12.6 Schematic representation of an automated colorimetric analysis. regular intervals prevents diffusion and cross-conta ...

Figure 12.7 The automated determination of magnesium in urine using o.o'-dihyroxyazobenzene (DAB). The final reagent concentrati ...

Figure 12.8 Continuous-flow enzymatic determination of ethanol in beverages. To the right is a series of six standards (0–0.4%) ...

Constant Monitoring and on Line Analysis The provision of a constant measure of an analyte in the process stream of a chemical p ...

on line mode will then require frequent sampling and rapid presentation of the sample to the instrument followed by rapid analys ...

Further Reading Ewing, G. W. (ed.), Environmental Analysis, Academic Press, 1977. Foreman, J. K. & Stockwell, P. B., Automat ...

13 — The Role of Computers and Microprocessors in Analytical Chemistry 13.1— Introduction The management of an analytical chemis ...

spectrometers and chromatographs often allow for the analysis of a number of analytes in sequence, with a computer controlling t ...

recall. The computer will be able to carry out a search for the most likely identity of an unknown sample and present the analys ...

area network (LAN) to facilitate the transfer of information between them. A typical LAN is shown in Figure 13.1(a). It includes ...