A large number of sediment samples representing most of the active mud accumulation areas of the Gulf of Finland were studied for total cadmium, chromium, lead, mercury, arsenic, copper and zinc. The highest concentrations of metals were found in sediment surfaces in the easternmost part of the Gulf, which is influenced by the inflow of the Neva river and the loads of the city of St. Petersburg...

This study used particle size analysis to investigate the initial accumulation and trap efficiency of radiocesium ((137)Cs) in four irrigation ponds, ~4-5 months after the Fukushima Dai-ichi nuclear power plant (DNPP) accident. Trap efficiency, represented by the inventory of (137)Cs in pond sediment to the inventory of radiocesium in soil surrounding the pond (i.e., total (137)Cs inventory), w...

The cement industry is considered as a major source of heavy metals pollution in topsoil. This study aims at measuring the metal contamination level vicinity Shiraz factory, and assessing ecological environmental risks associated with factory's activities surrounding To do so, 10 samples soil were taken from around factory depth 0-10 cm concentration some including Al, Cd, Ni, Pb was measured. ...

Lake Victoria (L. Victoria) is the largest African tropical and freshwater lake, with one of highest pollution levels, globally. It shared among Uganda, Kenya Tanzania, but it drained only by river Nile, longest in Africa. Though environmental studies have been conducted investigations heavy metals (HMs) contamination sediments from fish landing sites ports on Ugandan portion L. are limited. In...

The dynamics of the nitrogen intermediates N2O and NO2 in estuarine sediments were studied along a salinity gradient in the eutrophied Weser Estuary (Germany) using microsensors for N2O, NO2, NOx, and O2. During dark incubations in the laboratory of sediment samples from a freshwater site, a brackish water site with fluctuating salinity, and a marine site, the effects of environmental changes i...

Eolian dune fields on Earth and Mars evolve as complex systems within a set of boundary conditions. A source-to-sink comparison indicates that although differences exist in sediment production and transport, the systems largely converge at the dune-flow and pattern-development levels, but again differ in modes of accumulation and preservation. On Earth, where winds frequently exceed threshold s...

Polluted sediments limit the useful and biotic life of a water reservoir. Therefore, classification verification contamination pollution levels reservoirs are essentials for preservation biota to organize actions environmental management. Thus, aim this study is determine concentrations potentially toxic metals [lead (Pb), zinc (Zn), nickel (Ni), copper (Cu), cadmium (Cd)] in sediment samples c...

The origin of the microbial community in a coastal marine sediment was investigated by examining the physical, chemical, and microbial characteristics of the sedimenting particles in Halifax Harbor, Canada. Particles were collected using particle interceptor traps placed on the sediment surface. The measured rate of particle accumulation compared to the sediment accumulation rate indicates that...