BACKGROUND Hexavalent chromium is a known carcinogen when inhaled, but its carcinogenic potential when orally ingested remains controversial. Water contaminated with hexavalent chromium is a worldwide problem, making this a question of significant public health importance. METHODS We conducted an ecological mortality study within the Oinofita region of Greece, where water has been contaminate...

he strict corrosion-control requirements in the aerospace inT dustry were developed based on the performance of hexavalent chromium (chromates). With the recent rash of environmental regulations targeting hexavalent chromium, it is reasonable to ask what the industry’s response has been to identify acceptable replacement technologies. Does the aerospace industry take the “ostrich response,” whi...

The development of hexavalent chromium remediating fibrous biocomposite mats through the immobilization of a hexavalent chromium reducing bacterial strain, Morganella morganii STB5, on the surfaces of electrospun polystyrene and polysulfone webs is described. The bacteria-immobilized biocomposite webs have shown removal yields of 93.60 and 93.79 % for 10 mg/L, 99.47 and 90.78 % for 15 mg/L and ...

Metal-on-metal bearings for total hip replacements have been introduced as an alternative to polyethylene in young and more active patients. These have, however, been shown to be prone to implant malpositioning and have been limited by some specific design features. In that context, coatings present an option to increase wear resistance by keeping the high fracture strength of the metal substra...

in this study, the adsorption of hexavalent chromium and zinc ions from the solution is investigated by raw red mud and mechanical-chemical activated red mud along with the possibility of selective reclamation of these ions from the solution. the mechanical-chemical activation of red mud was done by employing high-energy milling and subsequent acid treatment with hno3. raw red mud (rrm) and mec...

introduction: in electroplating processes, hexavalent chromium mist is emitted in air. hexavalent chromium mist can cause lung cancer and nasal septum in workers. as permissible exposure limit (pel) of hexavalent chromium is low (0.5 µg/m 3 ) and it is used in various industries, evaluation of workers exposure to hexavalent chromium is very important. however, hexavalent chromium is relatively ...

A suite of industrial activities has lead to widespread Cr contamination within soils and natural waters. Although Cr is an essential element for humans, the hexavalent form is toxic, mutagenic, and carcinogenic (National Research Council, 1974). As such, the widespread presence of Cr in the environment poses a serious threat to human and animal welfare. The toxicity of Cr, however, is a functi...

The marked affinity of erythrocytes for hexavalent chromate anion was reported in 1950 by Gray and Sterling (1). Since then, erythrocytes labeled with radioactive sodium chromate have been used extensively for the determination of erythrocyte survival in vivo (1-5) and the determination of blood volume (4-6). The anionic hexavalent form of chromium is bound firmly to erythrocytes, is not reutil...

background: great concern about occupational exposure to chromium (cr [vi]) has been reported due to escalated risk of lung cancer in exposed workers. consequences of occupational exposure to cr (vi) have been reported as oxidative stress and lung tissue damage. objective: to investigate the feasibility of biological effect monitoring of chrome electroplaters through analysis of serum malondial...