this work reports the comparative study of heavy metal water concentrations fromtwo coastal ecosystems ofcadizgulf (swspain): bay of cadiz and ria ofhuelva estuary in samplestaken on years 1999-2000. sampling zones showed different heavymetal levels. statistical analysisof dissolved trace metal concentrations (cu, zn, cd and pb) showed significant differences betweenhuelva and cadiz zones based...

Dolochar which is a solid waste generated by the sponge iron industries is a major concern worldwide. In this paper an attempt has been made to investigate the properties (i.e. physical and chemical) so as to reutilize it as absorbent to absorb the pollutants present in water. The adsorption behavior of dolochar using batch process has been studied to remove hexavalent chromium from synthetic w...

Sludge of two different ages (3 years old; Type 1 sludge, and 3 months old; Type 2 sludge) were applied to the following soil types: two luvisols, an arenosol and a vertisol at different rates to determine whether sludge application had any effect on the partitioning and consequently, bioavailability andmobility of Cu, Pb and Zn. A fivestage sequential extraction procedurewas used to determine ...

The article is the investigation of heavy metals pollution on surface waterin Ikoli River and Epie creek in Yenagoa, metropolis, Bayelsa State. Pb,Cd, Ni, Cr, Fe, Zn was determined evaluated using GeographicalInformation System. Zinc concentration below permissible limitof 3 mg/L all locations sampled. Iron 77.78% limit ofWHO 2011 0.3 while other examined Riverand are highly polluted. index for...

It is well established that horseshoe crab eggs can develop successfully across a wide range of temperatures and salinities. However, many estuaries in which horseshoe crabs spawn have been heavily impacted by pollutants, and degraded water quality may be affecting the survival of horseshoe crab eggs laid in such areas. Laboratory bioassays using Limulus polyphemus embryos and larvae have shown...

Remote sensing allows monitoring heavy metal pollution in crops for agricultural production and food security. This paper presents an approach towavelet-fractal analysis for exploring a set of sensitive spectral parameters to monitor the heavy metal pollution levels in rice crops from hyperspectral reflectance data. Hyperspectral and biochemical data were collected from three study farms in Cha...

The excellent study by Yu et al. (2011) is among the few that have examined the effects of mixed metal exposures in human infants. Two of Yu et al.'s objectives were “to determine the concentrations of key toxic heavymetals in umbilical cord blood and the corresponding effects on neurobehavioral development,” and “to identify risk factors for prenatal toxic metal exposure.” It is therefore cruc...

the problem of removing pollutants from water is an important process and is becoming moreimportant with the increasing of industrial activities. one of the most important environmental problems iswater resources pollution by heavy metals. bioabsorbtion is affordable adsorbents for the removal of heavymetals from aqueous solutions. this study explores the adsorption potential of cr (vi), cd (ii...