A study on the relationship between iridium concentration in hen eggs and the iriditum-enriched feedstuff by INAA

YANG Gaochuang MAO Xueying LU Yan OUYANG Hong WANG Jinchun ZHANG Zhaohui CHAI Zhifang

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A study on the relationship between iridium concentration in hen eggs and the iriditum-enriched feedstuff by INAA

更新时间：2021-03-12

- A study on the relationship between iridium concentration in hen eggs and the iriditum-enriched feedstuff by INAA
- NUCLEAR TECHNIQUES Issue 10, (2000)
- 作者机构：
  
  中国科学院高能物理研究所!核分析技术开放实验室北京,100080
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助!（19935020）;中国科学院重大项目资助!（21039751）;核分析技术开放实验室资助
- DOI：
  CLC： O657.4
- Published：01 October 2000
- 稿件说明：
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[1]杨高创,毛雪瑛,吕娅丽,欧阳宏,王进春,张朝晖,柴之芳.用中子活化法研究鸡蛋中铱的含量与富铱饲料的关系[J].核技术,2000(10):726-730.

YANG Gaochuang MAO Xueying LU Yan OUYANG Hong WANG Jinchun ZHANG Zhaohui CHAI Zhifang. A study on the relationship between iridium concentration in hen eggs and the iriditum-enriched feedstuff by INAA[J]. Nuclear techniques, 2000, (10): 726-730.
[1]杨高创,毛雪瑛,吕娅丽,欧阳宏,王进春,张朝晖,柴之芳.用中子活化法研究鸡蛋中铱的含量与富铱饲料的关系[J].核技术,2000(10):726-730. DOI：

YANG Gaochuang MAO Xueying LU Yan OUYANG Hong WANG Jinchun ZHANG Zhaohui CHAI Zhifang. A study on the relationship between iridium concentration in hen eggs and the iriditum-enriched feedstuff by INAA[J]. Nuclear techniques, 2000, (10): 726-730. DOI：

摘要

在鸡饲料中添加一定量的铱化合物（ＮＨ４）２ＩｒＣｌ６），喂养１４ｄ，用中子活化法分析所产蛋的铱含量．结果在蛋壳、蛋清、蛋黄中均发现了铱元素，其中蛋黄为最高。且它们的铱含量都随鸡饲养天数的增加呈上升趋势，到７、８ｄ后稳定在一定范围；当停止喂养含铱饲料后，铱含量迅速下降．另外，铱从食物到蛋壳的比率大约为万分之七．这一结果为铱有可能从食物链进入恐龙体内，并通过代谢作用沉积到蛋壳中的推断提供了科学依据。

Abstract

Several hens were fed by adding ammonium chloroiridate into their forage. After two weeks

the Ir concentration in three fractions (eggshell

albumen

egg yolk) of their eggs were measured by INAA. Ir was found in all of the three parts. However

the highest concentration of Ir was found in the egg yolk fraction

which was about 10 times higher than that in the eggshell and albumen. Moreover

the longer the Ir-containing feedstuff was used

the higher the Ir concentration in the egg fractions was. After 7-8 days feeding

it kept stable. On the other hand

as soon as adding the Ir-containing additives were stopped

the Ir concentration in the egg fractions fell down quickly. The experimental results indicated that the ratio from the feedstuff to the eggshell via gastrointestinal pathway to be about 0.07 percent. The new result might be beneficial to explain the iridium-enriched dinosaur eggshell fossils and to interpret the origin of the mass extinct event of dinosaur occurred at the end of Cretaceous.

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Related Author

柴之芳

欧阳宏

杨高创

毛雪瑛

WANG Jinchun MAO Xueying YANG Gaochuang OUYANG Hong CHAI Zhifang

DAI Xiongxin WANG Jinchun MAO Xueying CHAI Zhifang OUYANG Hong

欧阳宏

柴之芳

Related Institution

Institute of High Energy Physics and Laboratory of Nuclear Analytical Techniques, the Chinese Academy Sciences

中国科学院高能物理研究所核分析技术开放实验室

Institute of High Energy Physics and Laboratory of Nuclear Analysis Techniques, the Chinese Academy of Sciences

中国科学院高能物理研究所核分析技术开放研究实验室

中国科学院高能

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