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Publication Determination of lead, cadmium and copper contents in raw milk, fora...  

Update Date: [2013-11-11]

NO.: 28
 
Reportno.

AHRI report No.28

Topic

Determination of lead, cadmium and copper contents in raw milk, forage, feed and water.

Department

Taiwan Animal Health Research Institute

Author Si. JengFS.J. LeeFL.S. Lin
Summary

Samples of raw milk were collected from the bulk holding tanks of 200 farms in 15 counties to analyse the contents of lead, cadmium and copper. Average concentrations of lead and cadmium determined by graphite frirnace atomic absorption spectrophotometrv (AA) were 33.6 ng ml (8.6-71.0) and 4.6 ng ml (1.0-13.3) respectively; and copper assayed by flame AA were 0.259 £gg ml (0.108-1.212). Samples from a certain county in north area had the highest average amounts of lead(45.8 ng ml) and cadmium (9.1 mg ml) (p<0.05). Whereas, samples from a certain county in south area had the highest average amount of copper (0394 £ggmfl. Forage, feed. water and raw milk samples were collected from 20 dairy farms to further investigate the effect of the ingested 3 elements on milk concentrations. The result indicated that the ingested lead, cadmium and copper were not significantly correlative to milk lead, cadmium and copper respectively. This survey indicates that raw milk does not contribute significantly to lead, cadmium and copper exposure of human.

Keyword

cadmiumFraw milkFcadmium