Naslov
Lead and cadmium levels in raw cow's milk from an industrialised Croatian region determined by electrothermal atomic absorption spectrometry

Autori
Pavlović, Ivan ; Sikirić, Maja ; Lukač-Havranek, Jasmina ; Plavljanić, Nataša ; Brajenović, Nataša

Izvornik
Czech journal of animal science (1212-1819) 49 (2004), 4; 164-168

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
lead; cadmium; raw cow's milk; electrothermal atomic absorption spectrometry

Sažetak
A simple and accurate method for lead and cadmium determination in raw cow's milk by electrothermal atomic absorption spectrometry (ET-AAS) is described. Milk from fifteen farms near Križ in Zagreb region was sampled from collective sample directly into plastic bottles (to avoid contamination), four times during the March of 2000. The milk samples were digested in a MLS-1200 Mega Microwave digestion system with MDR Technology. Lead and cadmium were determined directly by ET-AAS in the solutions of digested samples. Statistical analyses were performed using statistical software SAS v 8.0. Both the farm and date as well as their interaction (P < 0.0001) had a statistically significant influence on Pb and Cd levels in cow's milk. Pb and Cd contents were not correlated (R = 0.11) and in all examined samples were smaller than tolerance level as defined by Croatian regulations. Chemical and statistical analysis showed that differences between the farms were not due to the feed. That implies that in order to avoid milk contamination by toxic trace elements great care of stable microclimate and all apparatuses and dishes in contact with milk should be taken.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Poljoprivreda (agronomija)

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