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Arsenic content of Spanish cows' milk determined by dry ashing hydride generation atomic absorption spectrometry

Published online by Cambridge University Press:  01 June 2009

M. Luisa Cervera ,
J. Carlos Lopez  and
Rosa Montoro
M. Luisa Cervera
Affiliation:
Departamento de Química Analítica, Universidad de Valencia, Dr Moliner 50, 46100 Burjasot, Valencia, España
J. Carlos Lopez
Affiliation:
Instituto de Agroquímica y Tecnología de Alimentos (CSIC), Jaime Roig 11, 46010 Valencia, España
Rosa Montoro
Affiliation:
Instituto de Agroquímica y Tecnología de Alimentos (CSIC), Jaime Roig 11, 46010 Valencia, España
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Summary

The arsenic content of cows' milk consumed in Spain was determined. A procedure using dry ashing hydride generation atomic absorption spectrometry was developed for the purpose. Experimental conditions for the destruction of organic matter were established and an interference study was carried out. The method developed has a detection limit of 0·1 ng/g, a relative SD of 5%, and a recovery (mean ± CSI) of 100 ± 4%. The accuracy of the method was checked by analysis of a certified sample of IAEA milk powder (mean ± CSI: certified, 4·85 ± 0·32 ng/g; found, 5·04 ± 0·81 ng/g). The proposed procedure was used to analyse cows' milk samples. The extremely low arsenic levels found do not present toxicological problems.

Type
Original Articles
Information
Journal of Dairy Research , Volume 61 , Issue 1 , February 1994 , pp. 83 - 89
Copyright
Copyright © Proprietors of Journal of Dairy Research 1994

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References

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