We sampled the Darwin mud volcano (MV) for meiofaunal community and 14 trophic structure in relation to pore-water geochemistry along a 10-m transect from a seep 15 site on the rim of the crater towards the MV slope. Pore-water profiles indicated 16 considerable variation in upward methane (CH4) flow among sediment cores taken along the 17 transect, with highest flux in the seep sediment core, ...

A recent survey has suggested that up to 25 OOO km of UK sewerage networks may be affected by inpipe sediment deposits. Field evidence indicates that, typically, up to 90% of the pollution load discharged from storm sewage overflows may be derived from the erosion of accumulated in-system sediment, commonly referred to as silt. A sewer flow quality simulation model is being developed under the ...

concentrations of eight metals namely, cr, mn, fe, co, ni, cu, zn and pb were examined in the surface sediments of discharge channels of six industries in lagos using x-ray fluorescence spectrometry.these channels drain into the isolo canal which empties into the lagos lagoon and eventually into the atlantic ocean. this study was conducted to detect any contamination levels within the sediment...

This study is a preliminary examination of heavy metal pollution in sediments close to two mine sites in the upper part of the Jequetepeque River Basin, Peru. Sediment concentrations of Al, As, Cd, Cu, Cr, Fe, Hg, Ni, Pb, Sb, Sn, and Zn were analyzed. A comparative study of the trace metal content of sediments shows that the highest concentrations are found at the closest points to the mine sit...

pollution deriving from trace elements (cd, cu, ni, pb, zn, hg, as and cr) in sediment samples(collected in 2009), belonging to rivers located in catalonia and the basque country (spain), was assessedaccording to sediment quality guidelines. sediment samples were ranked in terms of a pollution index thattakes into account the presence of multiple pollutants such as trace elements. while only ab...