Palmer I S, Olson O E, Ketterling L M, Shank C E
J Am Diet Assoc. 1983 May;82(5):511-5.
Selenium intake by adults consuming self-selected levels of four different diets averaged 209 micrograms. per day and correlated well with caloric and protein intake. Urinary selenium concentration averaged 0.108 microgram. per milliliter, and 24-hour excretion for the various diets averaged 58.0% to 88.6% of the intake. The data suggest that the RDA upper limit of 200 micrograms. of selenium per day and the suggested maximum urine selenium concentration may be too restrictive. The data further indicate that even though there are differences in the absorption of selenium from different sources, the average is about 70% for foods purchased in the Northern Great Plains area.
食用四种不同自选饮食水平的成年人的硒摄入量平均为每天209微克，且与热量和蛋白质摄入量密切相关。尿硒浓度平均为每毫升0.108微克，不同饮食的24小时排泄量平均为摄入量的58.0%至88.6%。数据表明，每天200微克的硒推荐膳食摄入量（RDA）上限和建议的最大尿硒浓度可能限制过严。数据还进一步表明，尽管不同来源的硒吸收存在差异，但在大平原地区北部购买的食物中，硒的平均吸收率约为70%。
