Monthly Archives: January 2014

Land is a finite resource

A new report: "Assessing Global Land Use: Balancing Consumption with Sustainable Supply" has been released by the Land and Soils Working Group of the International Resource Panel on 24 January 2014. The report explores how the management of land-based biomass production and consumption can be developed towards a higher degree of sustainability across different scales:…
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What is PCB?

PCBs (polychlorinated biphenyls) constitute 209 different chlorinated congeners with different physico-chemical properties depending on chlorine content and structure. More than 100 of these congeners were previously produced as part of commercial PCB mixtures, with a total World production in excess of 1 million tons. The total PCB use in Denmark in the period 1950-1983 has…
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New Recommended Action Values for indoor PCB pollution

In 1996 recommended Action Values for 24 hours indoor exposure to PCB was established in Germany. Annual mean action value was 300 ng/m3, and intervention value was 3000 ng/m3 (3 µg/m3). The PCB concentration was calculated as PCB6 multiplied with a corrections factor of 5. In 2009 the Danish National Board of Health (now called…
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