A barium germanium 1,2-ethanediolato complex as precursor for barium metagermanate

Barium and Barium Compounds

The International Programme on Chemical Safety (IPCS), established in 1980, is a joint venture of the United Nations Environment Programme (UNEP), the International Labour Organization (ILO), and the World Health Organization (WHO). The overall objectives of the IPCS are to establish the scientific basis for assessment of the risk to human health and the environment from exposure to chemicals, ...

Barium and Barium Compounds

Bowels for a Barium Enema

Half a century has elapsed since Rieder (1904) and Schiule (1904) first reported the use of opaque media for radiographic examination of the colon, during which time many other techniques have been improved. At the same time, whether due to medical prejudice or to the assertion of an exclusive nursing prerogative over the patient's bowels, methods of preparing the colon for the injection of bar...

Barium dithionate as an EPR dosemeter.

Electron paramagnetic resonance (EPR) dosimetry is growing in popularity and this success has encouraged the search for other dosimetric materials. Previous studies of gamma-irradiated barium dithionate (BaS(2)O(6) x 2H(2)O) have shown promise for its use as a radiation dosemeter. This work studies in greater detail several essential attributes of the system. Special attention has been directed...

Uptake of Barium from Vermiculite by the Bacterium Pseudomonas fluorescens - New Indications for Barium as a Palaeoproxy

The apparent association of biogenic barite (BaSO4) and organic matter in marine sediments has given support to the idea of using Ba as a proxy for palaeoproductivity. Despite this general acceptance only a few unicellular organisms (acantharian, diatoms) are known to incorporate barium. In this work, we show that the bacterium Pseudomonas fluorescens is able to take up barium. Because natural ...