Bro S, Sandström B, Heydorn K
Department of Clinical Chemistry, Odense University Hospital, Denmark.
J Trace Elem Electrolytes Health Dis. 1990 Sep;4(3):147-55.
Average daily intakes of essential and toxic trace elements from self-selected diets consumed by 100 men, selected as a random sample among the population of 30-34 year-old men in one urban and two rural areas of Denmark, were determined by the analysis of 48 h duplicate food portions. Median daily dietary intakes were 11.3 mg for zinc, 1.1 mg for copper, 11.3 mg for iron, 51 micrograms for selenium, 3.9 mg for manganese, 99 micrograms for molybdenum, 7 micrograms for lead and 11 micrograms for cadmium. Median dietary intake of mercury was below the detection limit. The observed nitrogen, sodium and potassium intakes were about 25% lower than the average total daily excretion of these constituents. It is therefore assumed that dietary intakes of nutrients during the duplicate portion sampling period were reduced by about 25% and that the observed intakes of trace elements can be regarded as minimum estimates of habitual intake. Taking this into consideration, it is concluded that the content of essential trace elements in Danish diets seems to be adequate and the amounts of the elements lead, mercury and cadmium are of little concern as regards health aspects.
从丹麦一个城市和两个农村地区30 - 34岁男性人群中随机抽取100名男性作为样本，通过分析48小时的双份食物摄入量，测定了他们自选饮食中必需和有毒微量元素的平均每日摄入量。锌的每日膳食摄入量中位数为11.3毫克，铜为1.1毫克，铁为11.3毫克，硒为51微克，锰为3.9毫克，钼为99微克，铅为7微克，镉为11微克。汞的膳食摄入量中位数低于检测限。观察到的氮、钠和钾摄入量比这些成分的平均每日总排泄量低约25%。因此可以假定，在双份食物采样期间的膳食营养素摄入量减少了约25%，观察到的微量元素摄入量可视为习惯性摄入量的最低估计值。考虑到这一点，可以得出结论，丹麦饮食中必需微量元素的含量似乎是充足的，就健康方面而言，铅、汞和镉等元素的含量无需担忧。
