Gibson R S, Martinez O B, MacDonald A C
J Gerontol. 1985 May;40(3):296-302. doi: 10.1093/geronj/40.3.296.
The zinc, copper, and selenium status of 90 noninstitutionalized Canadian elderly women (M age = 70.3 years) in a university community and consuming self-selected diets was assessed using hair and serum trace element levels and dietary trace element intakes. Mean (+/- SD) serum zinc and copper levels (analyzed via atomic absorption spectrophotometry, AA) were 1.09 +/- 0.13 and 1.22 +/- 0.29 micrograms/ml, respectively. Mean serum selenium (+/- SD) (analyzed via instrumental neutron activation analysis (INAA) was 0.115 +/- 0.03 micrograms/ml. Median hair trace element values, analyzed via INAA, were 156 for zinc, 12.8 for copper, and 0.63 micrograms/g for selenium. Mean (+/- SD) daily dietary intakes determined via chemical analysis of 1-day diet duplicates were 1.2 +/- .06 mg/d for copper (via AA), 7.6 +/- 3.3 mg/d and 77.6 +/- 44.5 micrograms/d for zinc and selenium (via INAA), respectively, whereas mean copper and zinc intakes (+/- SD) calculated from 3-day records were 1.6 +/- 0.7 and 10.1 +/- 3.5 mg/day, respectively. Median hair and serum trace element values were above the levels associated with deficiencies. Thus the zinc, copper and selenium status of these elderly women appeared adequate.
对90名居住在大学社区、饮食自主选择的非机构化加拿大老年女性（平均年龄 = 70.3岁）的锌、铜和硒状况进行了评估，评估方法包括头发和血清中的微量元素水平以及饮食中的微量元素摄入量。血清锌和铜的平均（±标准差）水平（通过原子吸收分光光度法分析）分别为1.09±0.13和1.22±0.29微克/毫升。血清硒的平均（±标准差）水平（通过仪器中子活化分析）为0.115±0.03微克/毫升。通过仪器中子活化分析得出的头发微量元素中位数分别为：锌156、铜12.8、硒0.63微克/克。通过对1天的饮食复制品进行化学分析确定的平均（±标准差）每日饮食摄入量分别为：铜1.2±0.06毫克/天（通过原子吸收分光光度法）、锌7.6±3.3毫克/天和硒77.6±44.5微克/天（通过仪器中子活化分析），而根据3天记录计算出的铜和锌的平均摄入量（±标准差）分别为1.6±0.7和10.1±3.5毫克/天。头发和血清微量元素的中位数高于与缺乏相关的水平。因此，这些老年女性的锌、铜和硒状况似乎充足。
