摘要:

The impact that lasers have had on spectroscopy is just starting to be felt in analytical procedures. Major new developments in Raman techniques and remote-sensing have already taken place, but not too many other areas have been exploited. The application of lasers to spectroscopic methods of analysis would seem to be a rewarding field, both for research by analytical chemists and for investment by instrument manufacturers.

ISSN:0007-8980    

DOI:10.1080/10408347508542685

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

The recent literature has been surveyed to review and correlate developments in ionization processes of interest to the analytical chemist. Electron impact methods are discussed in the overwhelming number of publications on mas spectrometry. The need has been to improve sensitivity of detection for many applications and research interests have been directed to the detection and identification of materials down to the pico-gram level, both by direct analysis and in conjunction with gas chromatography. Many publications have appeared that have widened the scope of spark source mass spectrometry. The use of the electrical detection in this field has increased the precision and accuracy of analysis. Rapid surveys of elemental analysis in such diverse areas as biochemistry, pollution control, and geology have become much more convenient by this method.

ISSN:0007-8980    

DOI:10.1080/10408347508542686

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

Since the discovery of the chemical shift phenomenon and the pioneering work by Siegbahn and co-workers in the mid-1960s,1,2ESCA (Electron Spectroscopy for Chemical Analysis) has become a powerful tool for chemists and physicists. The technique has been used to study solid state band structure and atomic and molecular bonding in both the solid state and the gas phase. From the point of view of the analytical chemist, however, one of the most important uses of the technique has been in the analysis of solid surfaces. The ESCA technique is essentially nondestructive, universal for all elements except hydrogen, samples a layer less than ∼30Å in depth, and can be applied to any vacuum-worthy solid. Indeed, at this depth resolution, ESCA is the only spectroscopic technique which can be used to study the surfaces of organic systems nondestructively.

ISSN:0007-8980    

DOI:10.1080/10408347508542687

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor