Analytical method aspects of assessing dietary intake of trace elements
1991
Capar, S.G.
The Food and Drug Administration (FDA) monitors toxic and nutrient elemnts in the US food supply through analysis of foods and calculation of dietary intakes in representative diets based on nationwide food consumption surveys. Toxic or nutrient elements routinely monitored by atomic absorption spectrometry include As, Se, Pb, Cd, and Hg. The nutrient elements, Ca, Fe, K, Mg, Mn, P, Zn, Cu, and Na are monitored by inductively coupled plasma atomic emission spectrometry. Iodine is monitored by spectrophotometry. Neutron activation analysis provides background information on elements not routinely monitored. FDA's current method development program for monitoring elements in foods is designed (a) to reduce the number of different mineralization procedures, (b) to expand the number of elements determined, and (c) to use inductively coupled plasma atomic emission spectrometry for determining all elements of interest. These analytical methods are reviewed and the applicability of currently used methods for assessing dietary intakes is discussed.
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