ISSN:
1618-2650
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary A closed PTFE vessel microwave digestion method is described for the HNO3/H2O2 digestion of food samples. 0.2–0.3 g of powdered samples are completely digested in 44 ml PTFE digestion vessels by 2 ml of 70% HNO3 and 1 ml of 30% H2O2 within 2 min at 100% full power (500 W). After air-cooling for 10 min in a refrigerator at — 25°C the digestion solution is diluted to 25ml. The total elemental concentrations of Ca, Mg, Cu, Fe, Mn and Zn are determined by sequential ICP-AES. The accuracy of the procedure was tested by analysis of 3 SRMs. The results are in good agreement with certified values.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00487029
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