Speciation of Cd and Pb in dust emitted from sinter plant.
Many studies have provided evidence of the impact of heavy metals in atmospheric emission. Sinter plants represent the first step in steel production, and are important emitters of Cd and Pb. The toxicity of these two metals depends above all on their speciation. Particles collected before and after the filtration system were analysed to determine the Cd- and Pb-bearing phases, using analytical tools such as XRF, EXAFS or ICP-AES and chemical leaching (sequential extractions adapted to steel dusts). Results show that Pb is associated with carbonate and Cd with chloride. These two types of speciation lead to high solubility under common environmental conditions, which may produce impacts on the environment and health.
Sammut
M L
ML
CEREGE, Aix-Marseille Université, CNRS, CdF, IRD, BP 80, 13545 Aix en Provence, Cedex 4, France.
Noack
Y
Y
Rose
J
J
Hazemann
J L
JL
Proux
O
O
Depoux
M
M
Ziebel
A
A
Fiani
E
E
D000393:Air Pollutants / Q000737:chemistry*; D002104:Cadmium / Q000032:analysis* / Q000737:chemistry; D004784:Environmental Monitoring; D007220:Industrial Waste / Q000009:adverse effects*; D007854:Lead / Q000032:analysis* / Q000737:chemistry; D019216:Metals, Heavy / Q000032:analysis; D012989:Soil Pollutants / Q000737:chemistry*; D013232:Steel / Q000009:adverse effects
D000393:Air Pollutants; D007220:Industrial Waste; D019216:Metals, Heavy; D012989:Soil Pollutants; D002104:Cadmium; D013232:Steel; D007854:Lead