Allotropic halogens.

Halogens in peat porewater

Halogens in porewater of peat bogs – the role of peat decomposition and dissolved organic matter H. Biester, D. Selimović, S. Hemmerich, and M. Petri University of Heidelberg, Institute of Environmental Geochemistry, INF 236, 69 120 Heidelberg, Germany Zweckverband Bodensee-Wasserversorgung, Betriebsund Forschungslabor, Süßenmühle 1, 78 354 Sipplingen, Germany Received: 16 August 2005 – Accepte...

Measurement of organic halogens in boiler feedwater

Materials of steam water cycles can suffer from corrosion induced by halide anions in feedwater. Organic halogen compounds in feedwater can be degraded and release halide anions under high temperature and pressure. Therefore it is necessary to be able to measure the organic halogen concentration. Existing measurements including Adsorbable Organic Halogens and Gas Chromatography are either not c...

Adsorbable organic halogens (AOX) Ruggedness test

A new hard allotropic form of carbon: Dream or reality?

An unusual phase of carbon with the fcc crystal structure, the lattice constant of which is very close to that of diamond, was reported before in a number of publications. In all the published works, the existence of fcc carbon could not be unambiguously established, as only insignificant amounts of fcc carbon in mixture with other carbon modifications were obtained so far. The present work pro...

Phosphorus nanorods--two allotropic modifications of a long-known element.

Elemental phosphorus has been known for about 350 years. As a result of huge scientific interest, numerous textbooks are filled with information about this element, its different allotropes, and its compounds. [1] Like boron and carbon, the element features tremendous structural variability, resulting in great diversity of physical properties and chemical reactivity: White phosphorus, P4, forms...