Pesticides and heavy metals in sediments
Several pollutants such as HCB, DDT and lindane were investigated during the 2001 survey. Generally, concentrations were low, except that of DDT and its compounds which exceeded NOAA quality standards at a number of locations in Azerbaijan and Iran. The Kura River was identified as a main source of such contamination (Mora and Sheikholeslami 2002). Furthermore, according to the same survey, lindane concentrations exceeded the Canadian (ISQG) sedi...
17 Oct 2013 - by GRID-Arendal
What is in a computer
On average a computer is 23% plastic, 32% ferrous metals, 18% non-ferrous metals (lead, cadmium, antimony, beryllium,
chromium and mercury), 12% electronic boards (gold, palladium, silver and platinum) and 15% glass. Only
about 50% of the computer can be recycled, the rest is dumped. The toxicity of the waste is mostly due to the lead, mercury
and cadmium – non-recyclable components of a single computer may contain almost 2 kilograms of lead. ...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Pollutants in sediments of the Caspian Sea (pesticides, nickel and chromium)
Sampled sediments in the Caspian Sea show that the accumulation is at its worst in the south and southwestern shores of this inland sea, off the shores of Iran and Azerbaijan. Sampled pollutants presented in this map are pesticides (persistant organic pollutants Lindane and DDT - POPs), and the heavy metals Chromium and Nickel.
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal