Intake of 17 elements by Swedish women, determined by a 24-h duplicate portion study.

摘要

15 Swedish women (27-46 years old) were recruited for this diet study. Duplicate portions of all foods and beverages consumed by the women were collected on 7 consecutive days. Atomic absorption spectrophotometry, after dry ashing, was used to determine the dietary intake of 17 elements (Al, As, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Na, Ni, Pb, Se and Zn). Considerable emphasis was placed on analytical quality assurance; a set of 6 different simulated diet reference materials, consisting of a number of foods mixed in different proportions, were prepared. A procedure for performance evaluation using these reference materials was developed. It was concluded that the intake of essential minerals and trace elements was generally adequate and that theintake of undesirable elements was low.