Lead absorption in cows: biological indicators of ambient lead exposure
In order to determine actual lead exposure from residual amounts of lead in the environmental soil following the introduction of effective engineering emission controls in a lead smeltery, the absorption of lead in cows grazing in the vicinity was investigated. Four groups of cows were examined: two groups of cows exposed to different ambient lead concentration, compared with two normal groups of cows. In each cow aminolevulinic acid dehydratase (ALAD), erythrocyte protoporphyrin (EP) and blood lead (Pb-B) were determined, two years prior to and four years after the technical sanitation of the lead emission source. The results demonstrated normalization of ALAD, EP and Pb-B after the technical sanitation. In spite of normalization, biological indicators ALAD and Pb-B determined four years after the technical sanitation showed increased lead absorption in comparison with the results of the control group. This indirectly indicates lead contamination of the environment from residual amounts of lead in the soil.
- Research Organization:
- Inst. for Medical Research and Occupational Health, Zagreb, Yugoslavia
- OSTI ID:
- 6903300
- Journal Information:
- Bull. Environ. Contam. Toxicol.; (United States), Vol. 32:3
- Country of Publication:
- United States
- Language:
- English
Similar Records
Zinc and cadmium interference with four commonly performed diagnostic tests for lead intoxication
Lead and cadmium absorption among children near a nonferrous metal plant. A follow-up study of a test case
Related Subjects
54 ENVIRONMENTAL SCIENCES
LEAD
ABSORPTION
BIOLOGICAL INDICATORS
BLOOD CHEMISTRY
COWS
LEVULINIC ACID
OXIDOREDUCTASES
PROTOPORPHYRINS
SMELTERS
SOILS
ANIMALS
CARBOXYLIC ACIDS
CATTLE
DOMESTIC ANIMALS
ELEMENTS
ENZYMES
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
KETO ACIDS
MAMMALS
METALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PIGMENTS
PORPHYRINS
RUMINANTS
VERTEBRATES
560305* - Chemicals Metabolism & Toxicology- Vertebrates- (-1987)
510200 - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)