Ultraviolet spectrometry

Miller J. N. (Ed.) (1981) Standards in Fluorescence Spectrometry, Ultraviolet Spectrometry Group, Chappman and Hall, London. 

Queiroz, E.F. et al., On-line identification of the antifungal constituents of Erythrina vogelii by liquid chromatography with tandem mass spectrometry, ultraviolet absorbance detection and nuclear magnetic resonance spectrometry combined with liquid chromatographic micro-fractionation, J. Chromatogr. A, 972, 123, 2002. 

It is possible to use techniques in which the additives can be determined by direct analysis of the sample, such as nuclear magnetic resonance (NMR) spectrometry, ultraviolet (UV) spectrometry, and UV desorption-mass spectrometry. These techniques are very useful when the concentrations of additives in the polymer are high. However, when additives are present in trace levels, it is necessary to carry out a preliminary extraction/concentration step before analysis. Some of the most common additives used in plastics materials are presented in Table 1. 

Many analytical laboratories are equipped with an infrared spectrometer, be it an older-style dispersive machine or a more modern Fourier-transform instrument. The results obtained from this particular technique are typically used in conjunction with the information gained from a variety of other analytical methods, such as nuclear magnetic resonance spectroscopy, mass spectrometry, ultraviolet-visible spectroscopy, or chromatography, in order to obtain information abbut a wide range of samples. 

Figure 2 Typical high-pressure arc lamps. (A) 150W xenon lamp, (B) 200 W mercury lamp. Dimensions in mm. (Reproduced with permission from Knowles A and Burgess C (1984) Practical absorption spectrometry. Ultraviolet Spectrometry Group. London Chapman and Hall.)...

Knowles A and Burgess C (1984) Practical Absorption Spectrometry/Ultraviolet Spectrometry. New York Chapman Hall. 

Reversed-phase high-performance liquid chromatography Scoville heat unit Solid-phase micro extraction Ultrasound-assisted extraction Ultra-high-performance liquid chromatography Ultra-performance liquid chromatography combined with mass spectrometry Ultraviolet... 

Thermal/infrared Chemical/analjftical Thermography Infrared spectrometry Raman spectrometry Ultraviolet spectrometry X-ray spectrometry Magnetic resonance imaging Infrared spectrometry is classified among chemical/analytical... 

Time of flight secondary ionization mass spectrometry Ultraviolet... 

Vegetable oil fatty-acid analysis has been greatly advanced by the application of spectroscopy and spectrometry. Ultraviolet (UV) absorption spectroscopy can be applied to quantitation or structural analysis this second application is limited to the study of conjugation that gives rise to characteristic absorption maxima in the UV re-... 

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