Nutritional elements in U.S. diets: Results from the Total Diet Study, 1982 to 1986

The prevalence of iodine deficiency in women of reproductive age in the United States of America

“…Surveys from 1982 to 1991 during the Total Diet Study monitored the concentration of iodine in the food supply and showed a decline in iodine intake, although the authors argued that this did not represent a trend 18 . The decrease in iodine intake since 1984 could be explained by the reduction in the amount of iodine in milk and by the replacement of iodine with bromine salts during commercial bread production 19 . The total consumption of iodised salt, which is typically added in the USA as potassium iodide to give a concentration of 77 μg iodine per of salt, was thought to be about 60% of all salt consumed 20 .…”

School and childcare center drinking water: Copper chemistry, health effects, occurrence, and remediation

“…Copper intake for dietary purposes has been estimated at between 0.45 and 1.2 mg for infants and adults, respectively (Pennington et al, 1989 ). According to the National Institutes of Health, the recommended dietary allowances are 0.44, 0.7, 0.89, and 0.9 mg for ages 4 to 8, 9 to 13, 14 to 18, and greater than 18 years of age, respectively, while the tolerable upper intake levels for these age groups are 3, 5, 8, and 10 mg, respectively (NIH, 2021 ).…”

On-line preconcentration and volatilization of iodine for inductively coupled plasma atomic emission spectrometry

“…However, *h2o » *d2o generally and kD¡0 = constant. As a result, a relationship was proposed in which the hydration number could be related more simply to the decay rate constant in water ( 7 Knowledge of the residual hydration has been useful in interpreting the binding mode in biological systems as well the number of ligating functions in interactions with polydentate ligands (2)(3)(4)(5)(6)(7)(8)(9).…”

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The Food and Drug Administration (FDA) monitors toxic and nutrient elements in the United States food supply through FDA's Total Diet Study. The quality of the food supply is assessed through analysis of foods and calculation of dietary intakes in representative diets based on nationwide food consumption surveys (1)(2)(3)(4)(5)(6). Current method development at FDA for monitoring elements in foods consolidates elemental analysis into one multielement technique.

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