Elements in major raw agricultural crops in the United States. 3. Cadmium, lead, and eleven other elements in carrots, field corn, onions, rice, spinach, and tomatoes

Journal Article · · J. Agric. Food Chem.; (United States)

DOI:https://doi.org/10.1021/jf00065a010· OSTI ID:6829342

Wolnik, K A; Fricke, F L; Capar, S G; Meyer, M W; Satzger, R D; Bonnin, E; Gaston, C M

Six raw agricultural crops (carrots, field corn, onions, rice, spinach, and tomatoes) were collected from major U.S. growing areas uncontaminated by human activities other than normal agricultural practices. Handling, preparation, and analysis of the 1215 samples were performed under carefully controlled conditions. Cadmium and lead were determined by differential pulse anodic stripping voltammetry and Ca, Cu, Fe, K, Mg, Mn, Mo, Na, Ni, P, and Zn by inductively coupled plasma emission spectroscopy. Mean Cd concentrations in carrots, field corn, onions, rice spinach, and tomatoes were 0.028, 0.012, 0.011, 0.012, 0.065, and 0.017 ..mu..g/g (wet weight), respectively; mean Pb concentrations in these crops were 0.009, 0.022, 0.005, 0.007, 0.045, and 0.002 ..mu..g/g wet weight, respectively.

• Research Organization: Food and Drug Administration, Cincinnati, OH
• OSTI ID: 6829342
• Journal Information: J. Agric. Food Chem.; (United States), Journal Name: J. Agric. Food Chem.; (United States) Vol. 33:5; ISSN JAFCA
• Country of Publication: United States
• Language: English

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ALKALI METALS
ALKALINE EARTH METALS
CADMIUM
CALCIUM
CHEMICAL COMPOSITION
COPPER
CROPS
DATA
ECOLOGICAL CONCENTRATION
ELEMENTS
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
INFORMATION
IRON
LEAD
MAGNESIUM
MANGANESE
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MOLYBDENUM
NICKEL
NUMERICAL DATA
POTASSIUM
SODIUM
SPECTROSCOPY
TRANSITION ELEMENTS
VOLTAMETRY
ZINC