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Julshamn et al .: Journal of AOAC International Vol. 96, No. 5, 2013 1101
Determination of Arsenic, Cadmium, Mercury, and Lead in
Foods by Pressure Digestion and Inductively Coupled Plasma/
Mass Spectrometry: First Action 2013.06
Kaare Julshamn and A mund M aage
National Institute of Nutrition and Seafood Research (NIFES), PO Box 2029 Nordnes, N-5817 Bergen, Norway
Hilde S kaar Norli
National Veterinary Institute, Department of Food and Feed Hygiene, Nordic Committee on Food Analysis, PO Box 8156, Dep.,
N-0033 Oslo, Norway
Karl H. Grobecker
European Commission Joint Research Centre, Institute for Reference Materials and Measurements (IRMM), B-2440 Geel, Belgium
Lars Jorhem
National Food Administration, Box 622, SE-751 26 Uppsala, Sweden
Peter Fecher
Bayerisches Landesamt für Gesundheit und Lebensmittelsicherheit, Zentrallabor Chemie, Sachgebiet N6, Eggenreuther Weg 43
D-91058 Erlangen, Germany
Dawn Dowell
AOAC INTERNATIONAL, 481 North Frederick Ave, Suite 500, Gaithersburg, MD 20877-2417
Submitted for publication April 22, 2013.
The method was approved by the Method-Centric Committee for
Elemental Contaminants in Food as First Action.
The AOAC Method-Centric Committee for Elemental
Contaminants in Food invites method users to provide feedback on the
First Action methods. Feedback from method users will help verify
that the methods are fit for purpose and are critical to gaining global
recognition and acceptance of the methods. Comments can be sent
directly to the corresponding author or
Corresponding author’s e-mail:
DOI: 10.5740/jaoacint.13-143
RESIDUES AND TRACE ELEMENTS
The method for the determination of As, Cd, Hg, and
Pb in foods by pressure digestion and inductively
coupled plasma (ICP)/MS, previously published in
J. AOAC Int. 90, 844–856 (2007), was approved as
First Action 2013.06 on April 9, 2013 by the Method-
Centric Committee for Elemental Contaminants in
Food. Digestion occurs using nitric acid in a closed
vessel with elevated temperature and pressure
by conventional or microwave-assisted heating.
Determination occurs using ICP/MS. The elemental
concentration ranges for As were 0.06–21.4, for
Cd 0.03–28.3, for Hg 0.04–0.6, and for Pb 0.01–2.4
in mg/kg dry matter. The repeatability RSD (RSDr)
ranged from 3.8 to 24% for As, 2.6 to 6.9% for Cd, 4.8
to 8.3% for Hg, and 2.9 to 27% for Pb. Reproducibility
RSD (RSDR) ranged from 9.0 to 28% for As, 2.8 to
18% for Cd, 9.9 to 24% for Hg, and 8 to 50% for Pb.
Heavy metal poisoning from elements like As, Cd, Hg,
and Pb has become a concern for most industrialized
countries (1). These toxic metals have a negative effect
on physiological processes. Because of the negative health
effects, governments have begun to implement regulations on
the levels of contaminants allowed in the food supply to protect
the public. The implementation of these regulations raises a
need to have validated analytical methods that produce reliable
and accurate results to ensure compliance. The method has been
reviewed and found acceptable for the determination of As, Cd,
Hg, and Pb in a variety of foods.
AOAC Official Method 2013.06
Arsenic, Cadmium, Mercury, and Lead in Foods
Pressure Digestion and Inductively Coupled Plasma/
Mass Spectrometry
First Action 2013
(Applicable to the determination of As, Cd, Hg, and Pb in a
variety of foods by pressure digestion and ICP/MS. Method is
capable of determining As, Cd, Pb, and Hg at or above 0.06,
0.03, 0.04, and 0.09 mg/kg dry matter, respectively.) For the
complete method, see the publication in J. AOAC Int. (2).
Results
The results of the collaborative study (Table 1; 2) show this
method to be suitable for the determination of As, Cd, Hg, and
Pb in a variety of foods. The elemental concentration ranges for
As were 0.06–21.4, for Cd 0.03–28.3, for Hg 0.04–0.6, and for
Pb 0.01–2.4 in mg/kg dry matter. The repeatability RSD (RSDr)
ranged from 3.8 to 24% for As, 2.6 to 6.9% for Cd, 4.8 to 8.3%
for Hg, and 2.9 to 27% for Pb. Reproducibility RSD (RSDR)
ranged from 9.0 to 28% for As, 2.8 to 18% for Cd, 9.9 to 24%
for Hg, and 8 to 50% for Pb.
References
(1) Sinicropi, M.S., Amantea, D., Caruso, A., & Saturnino, C.
(2010) Arch. Toxicol. 84, 501–520.
s00204-010-0544-6
(2) Julshamn, K., Maage, A., Norli, H., Grobecker, K., Jorhem, L.,
& Fecher, P. (2007) J. AOAC Int. 90, 844–856
93