Room-temperature phosphorimetry

Notwithstanding the excellent analytical features inherent in molecular phosphorimetric measurements, their use has been impeded by the need for cumbersome cryogenic temperature techniques. The ability to stabilize the "triplet state" at room temperature by immobilization of the phosphor on a solid support [69,70] or in a liquid solution using an "ordered medium" [71] has opened new avenues for phosphorescence studies and analytical phosphorimetry. Room-temperature phosphorescence (RTF) has so far been used for the determination of trace amounts of many organic compounds of biochemical interest [69,72]. Retention of the phosphorescent species on a solid support housed in a flow-cell is an excellent way of "anchoring" it in order to avoid radiationless deactivation. A configuration such as that shown in Fig. 2.13.4 was used to implement a sensor based on this principle in order to determine aluminium in clinical samples (dialysis fluids and concen-... 

Vo-Dinh, T. Room-Temperature Phosphorimetry for Chemical Analysis. Wiley-Interscience New York, 1984. 

This chapter describes use of solid-surface room temperature phosphorimetry (SSRTP) as a detection technique in the liquid chromatographic (LC) analysis of caffeine, theophylline, and theobromine. Measurements were made in a continuous mode, using a 2-nebulizer automatic system for SSRTP analysis (previously optimized for LC detection). Use of SSRTP and UV absorption detection was compared under identical experimental conditions.38... 

Vol. 66 Solid Phase Biochemistry Analytical and Synthetic Aspects. Edited by William H. Scouten Vol. 67 An Introduction to Photoelectron Spectroscopy. By Pradip K. Ghosh Vol. 68 Room Temperature Phosphorimetry for Chemical Analysis. By Tuan Vo-Dinh Vol. 69 Potentiometry and Potentiometric Titrations. By E. P. Serjeant Vol. 70 Design and Application of Process Analyzer Systems. By Paul E. Mix Vol. 71 Analysis of Organic and Biological Surfaces. Edited by Patrick Echlin Vol. 72 Small Bore Liquid Chromatography Columns Their Properties and Uses. Edited by Raymond P.W. Scott... 

Asafu-Adjaye EB, Yun Jl, Su SY. 1985. Multi-component mixture analysis using room-temperature phosphorimetry. Anal Chem 57 904-907. 

T. VO-DINH, "Room Temperature Phosphorimetry for Chemical Analysis", Wiley, New York, 1984. 

De La Campa MRF, Garcia MED, Sanz-Medel A. 1988. Room-temperature liquid phosphorimetry of the aluminum-ferron chelate in micellar media-determination of aluminum. Anal Chim Acta 212 235-243. 

Winefordner and co-workers review the development of phosphorimetry since 1975 for the quantitative measurement of low concentrations of organic molecules. The authors cover such areas as low-temperature and room-temperature phosphorimetry as well as advances in source and detection systems. Recalculation of phosphorescence oscillator strength has been carried out and correction terms obtained.Phosphorescence spectroscopy has been developed... 

Vo-Dinh T (1984) Room temperature phosphorimetry for chemical analysis. Wiley, New York... 

G. Ramis Ramos, M.C. Garcia Alvarez-Coque, A.M. O Reilly, I.M. Khasawneh and J.D. Winefordner, Paper-Substrate Room-Temperature Phosphorimetry of Polyaromatic Hydrocarbons Enhanced by Surface-Active Agents, Anal Chem., 60 416 (1988). 

In recent years, there has been a rapid growth in the number of publications that report the use of surfactant monomers or micelles to improve the analytical perfommice of various spectroscopic (UV-visible spectrophotometry, fluorimetry, phosphorimetry, chemiluminescence and atomic spectroscopy), and electrochemical (especially amperometry) methods [1]. The unique properties of surfactants have been recognized as being very helpful to overcome many problems associated with the use of organic solvents in these methods. Surfactant-modified procedures yield sensitivity and/or selectivity improvements in determinations commonly performed in homogeneous solution, whereas certain analytic methods (such as room-temperature phosphorescence in solution) can be exclusively conducted in organized media. 

In this chapter, the features of other detection methods that have been utilized in MLC conventional and sensitized fluorimetry, room-temperature phosphorimetry, inductively coupled plasma hyphenated with mass spectrometry, and amperometry, are examined. Table 12.1 gives details of some reported procedures. Most of them appeared during the 90s, when the development of applications in MLC increased. The study and use of new detection systems can result in enhanced flexibility and efficiency for the separation analyst. 

Zhang XH, Wang Y, Jin WJ (2008) Enantiomeric discrimination of l,l -binaphthol by room temperature phosphorimetry using y-cyclodextrin as chiral selector. Anal Chim Acta 622 157-162... 

Vo-Dinh T, Hooyman JR (1979) Selective heavy-atom perturbation for analysis of complex mixtures by room-temperature phosphorimetry. Anal Chem 51 1915-1921... 

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