Isotopic analysis of plutonium in foods by inductively-coupled plasma mass spectrometry.
Pu isotopes in various foods were detected using a quadrupole ICPMS and Aridus II desolvation nebulizer. The method has ability to detect239Pu and240Pu at concentrations of ~52pg/kg (0.12Bq/kg) and ~9.5pg/kg (0.08Bq/kg) as well as240Pu/239Pu ratio in <8h after receiving the samples. Foods were wet-ashed followed by DGA extraction for eliminating matrix, isobaric, and polyatomic interferences. A UH+formation rate <10-5and a 5-fold enhanced sensitivity for Pu was achieved after system optimization.
Winchester Engineering and Analytical Center, U.S. Food and Drug Administration, 109 Holton Street, Winchester, MA 01890, United States.
Kathryn
K
Emanuele
Winchester Engineering and Analytical Center, U.S. Food and Drug Administration, 109 Holton Street, Winchester, MA 01890, United States. Electronic address: zhichao.lin@fda.hhs.gov.
Zhichao
Z
Lin
Winchester Engineering and Analytical Center, U.S. Food and Drug Administration, 109 Holton Street, Winchester, MA 01890, United States.
Stephanie
S
Healey
Winchester Engineering and Analytical Center, U.S. Food and Drug Administration, 109 Holton Street, Winchester, MA 01890, United States.
Abdur-Rafay
AR
Shareef
Winchester Engineering and Analytical Center, U.S. Food and Drug Administration, 109 Holton Street, Winchester, MA 01890, United States.
Patrick
P
Regan
D005507:Food Contamination, Radioactive / Q000032:analysis*; D059022:Food Safety; D006016:Glycolates; D006801:Humans; D013058:Mass Spectrometry / Q000379:methods* / Q000706:statistics & numerical data; D011005:Plutonium / Q000032:analysis*; D011874:Radiometry / Q000379:methods* / Q000706:statistics & numerical data; D012117:Resins, Synthetic
D006016:Glycolates; C000615188:Plutonium-240; D012117:Resins, Synthetic; C520173:tetra-n-octyldiglycolamide; D011005:Plutonium; C000615187:Plutonium-239
Emergency response; Extraction resin; Food contamination; ICPMS; Plutonium isotopes; Rapid method