Determination of chemical warfare agents

Ethylarsine dichloride was used during WW I as a chemical warfare agent. Residues of this chemical warfare agent and its metabolites are still present today and continue to contaminate soil and water. A gas Chromatographic method for the detection and determination of ethylarsine dichloride is shown. Six dithiols were tested as possible derivatization reagents for ethylarsine dichloride. With selection of the dithiol, matrix interferences can be eliminated because of the different retention times of the derivatives.     

Destruction of diphenylarsine chloride (CLARK I) with activated ozone

The new technology of Plasmazon® uses the extremely strong oxidation of radicals to break up the compocunds of organic connections, e.g. chemical warfare agents like Clark I. In making a comparison of oxidation to normal ozone, the factor of the Plasmazon® -technology is available up to 10³. The investigation in an experimental test shows that it is possible to destroy the warfare agent character of Clark I. As the possibility of a large-lot application this technology is the method of choice for other chemical or biological warfare agents.     

Protected area characteristics that help waterbirds respond to climate warming

Protected area networks help species respond to climate warming. However, the contribution of a site's environmental and conservation-relevant characteristics to these responses is not well understood. We investigated how composition of nonbreeding waterbird communities (97 species) in the European Union Natura 2000 (N2K) network (3018 sites) changed in response to increases in temperature over 25 years in 26 European countries. We measured community reshuffling based on abundance time series collected under the International Waterbird Census relative to N2K sites’ conservation targets, funding, designation period, and management plan status. Waterbird community composition in sites explicitly designated to protect them and with management plans changed more quickly in response to climate warming than in other N2K sites. Temporal community changes were not affected by the designation period despite greater exposure to temperature increase inside late-designated N2K sites. Sites funded under the LIFE program had lower climate-driven community changes than sites that did not received LIFE funding. Our findings imply that efficient conservation policy that helps waterbird communities respond to climate warming is associated with sites specifically managed for waterbirds.     

Impr?gnierte Filterpapiere für die Wasserreinigung

Mit impr?gnierten Filtermaterialien ist es m?glich, die Schwermetalle Blei, Kupfer und Nickel sowie Arsen durch Sorption bzw. chemische Bindung aus Wasser zu entfernen. Bei 24stündiger Einwirkungszeit wurden Reduktionsraten von 97% bis>99,9% erreicht.     

Patagonia struggles to reduce its impact on the environment

Patagonia designs and distributes clothing for active use in the outdoors, and many of the people who work for Patagonia are avid climbers, skiers, surfers, and hikers. If the environment is destroyed, there will be no place for Patagonia's customers and employees to use its products. The types of products Patagonia makes and the personal commitment to the environment of its founder and employees make it unique. In the past few years, Patagonia has been systematically reviewing how the company's products and operations affect the environment. This article shows that even with Patagonia's unusual connection to the environment, the company is still finding that total quality environmental management is not easy. It takes analysis, planning, follow-through, and measurement; and even then, not all environmental efforts are successful.