Chronic Lead Poisoning Occurring in the Manufacture of Steel

EFFECT OF CHRONIC LEAD POISONING ON ERYTHROCYTE PROTOPORPHYRIN IN RATS

Research has shown that exposure to lead may have adverse effects at different blood lead concentrations. Lead inhibits at least two enzymes that are essential for the formation of heme, and because of the interaction of lead with these enzymes, no iron is inserted into protoporphyrin. Therefore the concentration of protoporphyrin increases in erythrocytes. The concentration of lead was mea...

Nephropathy in chronic lead poisoning.

This paper presents a study of renal function in I02 patients with lead poisoning admitted to the Occupational Diseases Clinic in Bucharest during the past IO years; nearly half the patients had no history of lead colic. Every possible cause of renal damage, other than lead, was excluded by a careful differential diagnosis. Renal function was investigated by repeated determinations of blood ure...

The Manufacture of Steel

Iron occurs mainly as oxide ores, though it is also found in smaller quantities as its sulfide and carbonate. These other ores are usually first roasted to convert them into the oxide. On a world scale the most important ore is haematite (Fe2O3), but in New Zealand the starting materials are magnetite (Fe3O4) and titanomagnetite (Fe2TiO4). The oxides are reduced with carbon from coal, through t...

effect of chronic lead poisoning on erythrocyte protoporphyrin in rats

research has shown that exposure to lead may have adverse effects at different blood lead concentrations. lead inhibits at least two enzymes that are essential for the formation of heme, and because of the interaction of lead with these enzymes, no iron is inserted into protoporphyrin. therefore the concentration of protoporphyrin increases in erythrocytes. the concentration of lead was measure...

Lead Poisoning in Its Acute and Chronic Forms