Processing–Structure–Property Relationships in Metals

THE RELATIONSHIPS OF METALS IN RIVER SEDIMENTS (NAHR- IBRAHIM, LEBANON) and ADJACENT FLOODPLAIN SOILS

Metals in bed-load sediments are multi-source, namely: weathered rocks, metals discharged directly into river, and eroded riparian soils. Contaminated flood plains represent storage system for releasing pollutants to rivers. An essential first step towards modeling this storage is to investigate the relationship. The objective of this study is compare the composition (CaCO3, Cd, Cr, Cu, Fe, Mn,...

Allometric relationships in the bioconcentration of heavy metals by the edible tropical clam Gafrarium tumidum.

Although metal contamination is a problem of major concern in the lagoon of New Caledonia due to intense mining activities conducted on land, very little is known on the metal ecotoxicology of local marine organisms. The clam Gafrarium tumidum was investigated to assess its usefulness as a bioindicator species of metal contamination in this lagoon. More particularly, allometric relationships be...

Levels of lead and other metals in human blood: suggestive relationships, determining factors.

Epidemiological studies on metal levels in blood were carried out. Evidence suggested the existence of a different trend in serum-iron levels in relation to blood lead levels in nonoccupationally exposed males (negative trend) and females (positive trend). There was a positive relation between blood lead levels and blood manganese levels in children and occupationally exposed male workers. Bloo...

Relationships between metals exposure and epidemiological parameters of two pathogens in urban pigeons.

Human activities often generate or increase concentration of chemical compounds including pesticides, hydrocarbons and metals that can potentially affect ecological interactions. We found that elevated levels of zinc in pigeon feathers were associated with both low prevalence of Chlamydiaceae (ornithosis disease) and low intensity of blood pathogens (Haemosporidian parasites). In contrast, high...

Metals in the Environment: Toxic Metals Removal