|
KMID : 0359320030430030393
|
|
Korean Journal of Veterinary Research
2003 Volume.43 No. 3 p.393 ~ p.398
|
|
|
A Study on Sample Preparation for the Analysis of Trace Elements in Foods of Animal Origin by Ultra High Pressure Microwave Digestion
|
|
이명헌/Lee, Myoung-heon
이희수/손성완/정갑수/박종명/김상근/Lee, Hee-su/Son, Seong-wan/Jung, Gab-soo/Park, Jong-myung/Kim, Sang-keun
|
|
|
Abstract
|
|
|
Simple and rapid sample preparation method for trace elements in foods of animal origin using ultra high pressure microwave digestion system (UHP/MDS) and inductively coupled plasma atomic emission spectrometer (ICP/AES) were developed.
１. For the digestion of sample using UHP-MDS, 20％ nitric acid (v/v) was the most suitable solvent for the determination of trace elements in foods of animal origin.
２. The optimal digestion conditions for UHP-MDS were as follows: final temperature 180℃, final pressure 400 PSI, and magnetic power 900 W in the solid sample. For the liquid sample final temperature 170℃, final pressure 300 PSI and magnetic power 700 W were optimal conditions.
３. As result of interlaboratory test, the average recovery rate of the for solid sample were 88.3∼99.1％ for As, 82.4∼93.3％ for Cd, 89.2∼101.2％ for Hg and 86.5∼93.8％ for Pb, respectively. In liquid sample, it were 87.0∼96.8％ for As, 87.5∼91.2％ for Hg and 91.4∼95.5％ for Pb, respectively.
４. The average coefficient variation rate were 3.3∼15.9％ for solid sample and 2.9∼10.8％ for liquid sample.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|