Showing papers by "Walter A. Aue published in 1981"
TL;DR: In this paper, the authors showed that the successful operation of a d.c. ECD whose configuration effectively precluded cation/anion neutralization also prevented chromatographic effluents from contacting the radioactive foil.
12 citations
TL;DR: In this paper, an electronic control mode was developed for operating a d.c. electron-capture detector at constant-current levels by means of a feed-back circuit and a linear range of 1·10 4 and a detection limit of 100 fg were observed with aldrin.
6 citations
TL;DR: In this article, a multilayers of various metal oxides have been produced on typical chromatographic supports such as diatomaceous earth and silica gel, and the layer thickness was characterized for phases based on iron and chromium.
Abstract: Multilayers of various metal oxides have been produced on typical chromatographic supports such as diatomaceous earth and silica gel. The layer thickness was characterized for phases based on iron and chromium. These data, as well as chromatographic evidence obtained on chromium oxide, suggest that the layers are homogeneous. Similar, but less well characterized layers of aluminum and titanium oxides have been obtained.
3 citations
TL;DR: In this article, two specially-made extractors are compared against a standard Soxhlet by using test samples simulating adsorptive and non-adsorptive conditions and containing coarse and fine particles.
3 citations
TL;DR: In this article, the neutral products resulting from the degradation of aromatic nitrocompounds, following interaction with argon metastables (presumably by Penning ionization), have been studied inside a gas chromatographic system.
Abstract: The neutral products resulting from the degradation of aromatic nitrocompounds, following interaction with argon metastables (presumably by Penning ionization), have been studied inside a gas chromatographic system. The simplest but typical example, nitrobenzene, yields benzene and phenol. Product ratios sometimes resemble results of mass spectrometry more than they do data obtained by pyrolysis. The ease of elimination of substituents from monohalogenated nitrobenzenes follows the order I > NO2 > Br > Cl. Ratios of the products resulting from loss of NO (rearrangement) versus loss of NO2 have been measured for a variety of compounds. The leaving NO2 group can be replaced by I if the system is doped with iodine vapour. Reduction of the nitro group and ring closures are observed with some of the more complex substrates, similar to results known from discharge chemistry.
2 citations