赣南稀土区生物效应研究——稀土日允许摄入量

Investigation on intake allowance of rare earth——A study on bio effect of rare earth in South Jiangxi

通过对赣南稀土区食谱中稀土分布调查，人体某些健康项目调查及结合动物实验结果分析，估算得稀土区成人的稀土（ＲＥＯ）日摄入量为６．０～６．７ｍｇ，属不安全量，而对照区成人日摄入量为３．３ｍｇ为安全量，据此分析比较，认为成人日允许摄入量定为４．２ｍｇ较妥，约为前人由动物实验外推的允许日摄入量１４～２４ｍｇ的五分之一。本研究对预测稀土远期环境风险有一定的参考价值，并提出应着手研究稀土污染治理问题。

From the studies on REE in recipes, on certain health items and on animal experiments in Jiangxi the daily intake of rare earth in adult (REO) of 6.0～6.7mg is not a safe dose;while the daily intake of 3.3mg obtained from the control group is regarded as safety.We think that the daily allowance intake of 4.2mg is more suitable,accountion for one fifth of 14～24mg as shown by animal experiments of some authors before.It is believed this investigation might be of reference value in predicting long term environmental hazard of REE.We suggest that the study on the contamination of REE should be tackled in time.