Morphologie und mechanische Eigenschaften von Celluloseacetat-Fasern mit aufgepfropftem Polyacrylnitril

Ohne Zusammenfassung     

Electron-impact studies—LXIV: Negative-ion mass spectrometry of functional groups. Nitroaniline derivatives

The various fragmentations of the o-nitrobenzanilide molecular anion have been studied by labelling procedures and substituent effects. The loss of HO· from the molecular anion is a specific proximity effect, involving the oxygen of the nitro group and the hydrogen of the amide moiety. The losses of NO· from variously substituted nitrobenzenes are considered in depth and it is suggested that the nitro→ nitrite rearrangement is a radical reaction. Negative-ion mass spectrometry may be used for the structure determination of sulphonamides and nitrophenylhydrazones.     

The simultaneous determination of the major,minor and trace constituents of silicate rocks using inductively coupled plasma spectrometry

An account is given of the evaluation of the inductively coupled plasma spectrometer for the simultaneous determination of a range of major and trace constituents of silicate materials. Procedures which have been used for the routine analysis of silicates are presented, and the spectral lines used noted. The results are evaluated from analyses of international rock standards and it is suggested that the method has considerable potential in silicate analysis, offering some advantages over alternative methods.