Alveolar macrophages (AM) from bovine lungs were exposed in culture to manual metal are (MMA) welding fume particles, chromium (Cr), UICC chrysotile A or anatase for 17-20 hr. All the welding particle samples were more cytotoxic to AM than to anatase. Particles from the welding of mild steel with a rutile-coated electrode were less cytotoxic than those produced with a basic-coated electrode. Pa...

The objective of this study was to develop a low-cost and eco-friendly adsorbent from agro-industrial waste for the removal hexavalent chromium in aqueous medium. (BMC) produced yellow mombin (Spondias L.) seeds characterized by determination chemical composition, thermal analysis (thermogravimetric (TG) differential (DTA)), Fourier transform infrared spectroscopy (FTIR), pH suspension point ze...

Chromium is found in the environment in two major forms: reduced CrIII and CrVI, or chromate. Chromate, the most biologically active species, is readily taken up by living cells and reduced intracellularly, via reactive intermediates, to stable CrIII species. CrIII, the most abundant form of chromium in the environment, does not readily cross cell membranes and is relatively inactive in vivo. H...