[Rapid analysis of toxic heavy metals in foods for emergency response to health crisis].
A simple and rapid method for determination of intentional contamination with heavy metals in foods using inductively coupled plasma-atomic emission spectroscopy (ICP-AES) has been developed. The heavy metals were extracted with sulfuric acid in a disposable tube using a homogenizer. The extract was diluted with 1% HNO(3) solution and analyzed with ICP-AES. Recovery tests of 9 metals, As, Cd, Cr, Hg, Mn, Pb, Sb, Sn, and Tl, from 12 foods were performed, and gave acceptable recovery (71-107%) with low relative standard deviation (1-11%). The time required for conversion of 12 samples to test solutions was approximately 2 hr. This method could be useful for identification of heavy metals involved in food poisoning cases.
Nomura
Chie
C
Osaka Prefectural Institute of Public Health, Higashinari-ku, Osaka, Japan.
Obana
Hirotaka
H
Oda
Hajime
H
D001205:Ascorbic Acid; D004630:Emergencies; D005504:Food Analysis / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D020260:Heavy Metal Poisoning, Nervous System / Q000175:diagnosis; D006801:Humans; D019216:Metals, Heavy / Q000032:analysis*; D013054:Spectrophotometry, Atomic / Q000379:methods*; D013464:Sulfuric Acids; D013997:Time Factors
D019216:Metals, Heavy; D013464:Sulfuric Acids; C033158:sulfuric acid; D001205:Ascorbic Acid