通过中子活化分析法测定葡萄牙皮涅尔居民双份膳食中的硒含量。
Determination of selenium in duplicate diets of residents of Pinhel, Portugal, by neutron activation.
作者信息
Reis M F, Holzbecher J, Martinho E, Chatt A
机构信息
Department of Chemistry, Dalhousie University, Halifax, N.S., Canada.
出版信息
Biol Trace Elem Res. 1990 Jul-Dec;26-27:629-35. doi: 10.1007/BF02992719.
A rapid cyclic instrumental neutron activation analysis (CINAA) method has been used to determine the selenium content of 27 duplicate diet samples from each of the 27 districts surrounding Pinhel, Portugal. The accuracy and precision of the CINAA method have been evaluated by analyzing certified reference materials and observed to be within +/- 5-10% for samples containing at least 40 ppb of selenium. The detection limit has been found to vary between 26-42 ppb selenium depending on the sample composition. The average daily dietary intake has been calculated as 37 micrograms of selenium per day.
采用快速循环仪器中子活化分析（CINAA）方法测定了葡萄牙皮涅尔周边27个地区中每个地区的27份重复饮食样本中的硒含量。通过分析有证标准物质对CINAA方法的准确度和精密度进行了评估，结果表明，对于硒含量至少为40 ppb的样本，其准确度和精密度在±5 - 10%以内。根据样本组成，已发现检测限在26 - 42 ppb硒之间变化。计算得出平均每日膳食摄入量为每天37微克硒。
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