The siderophore of Pseudomonas stutzeri KC, pyridine-2,6-bis(thiocarboxylic acid) (pdtc), is shown to detoxify selenium and tellurium oxyanions in bacterial cultures. A mechanism for pdtc's detoxification of tellurite and selenite is proposed. The mechanism is based upon determination using mass spectrometry and energy-dispersive X-ray spectrometry of the chemical structures of compounds formed...

In order to obtain information on the exact location of the respiratory enzyme chain in Gram-negative bacteria, an electron microscopic study was made of the sites of reducing activity of cells that had, in the living state, incorporated tellurite. In the test object Proteus vulgaris, the reduced tellurite was found to be deposited in bodies contiguous with the plasma membrane but different in ...

This work investigated the microbial toxicity of soluble species that can potentially be leached from the II-VI semiconductor materials, cadmium telluride and cadmium selenide. The soluble ions tested included: cadmium, selenite, selenate, tellurite, and tellurate. Their toxicity towards the acetoclastic and hydrogen-consuming trophic groups in a methanogenic consortium as well as towards a bio...

on Loeffler's medium are doing second-rate bacteriological work so far as diphtheria is con* cerned, was a serious reflection on any well" established laboratory. Since the statement appeared, we have tried our level best to incorporate tellurite media in the routine diag" nosis of diphtheria at this Institute, but the irregular and inadequate supplies of potassium tellurite during war prevente...

The main objective of the present work was to assess gamma radiation shielding competencies and transmission factors (TFs) for some tellurite glasses in form Bi2O3–TeO2–Na2O–TiO2–ZnO. MCNPX general-purpose Monte Carlo code (version 2.6.0) utilized determination TF values at various well-known radioisotope energies different glass thicknesses from 0.5 cm 3 cm. Moreover, important ray properties ...