N<sup>+</sup>离子束对腺嘌呤核苷的辐照损伤研究

邵春林; 余增亮; 李碧琳

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N⁺离子束对腺嘌呤核苷的辐照损伤研究

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- N⁺离子束对腺嘌呤核苷的辐照损伤研究
- STUDIES ON THE N⁺ ION BEAM IRRADIATION INDUCED DAMAGE TO ADENOSINE
- 辐射研究与辐射工艺学报 1996年14卷第3期页码：157-161,156
- 作者机构：
  
  1.中国科学院等离子体物理研究所　合肥　230031
  2.中国科技大学结构分析中心　合肥　230026
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目
- DOI：
  中图分类号：
- 纸质出版日期：1996-08，
  
  收稿日期：1995-08-28，
  
  修回日期：1996-01-08，
- 稿件说明：
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邵春林, 余增亮, 李碧琳. N⁺离子束对腺嘌呤核苷的辐照损伤研究[J]. 辐射研究与辐射工艺学报, 1996,14(3):157-161,156.

Shao Chunlin, Yu Zengliang, Li Bilin. STUDIES ON THE N⁺ ION BEAM IRRADIATION INDUCED DAMAGE TO ADENOSINE. [J]. Journal of Radiation Research and Radiation Processing, 1996,14(3):157-161,156.
邵春林, 余增亮, 李碧琳. N⁺离子束对腺嘌呤核苷的辐照损伤研究[J]. 辐射研究与辐射工艺学报, 1996,14(3):157-161,156. DOI：

Shao Chunlin, Yu Zengliang, Li Bilin. STUDIES ON THE N⁺ ION BEAM IRRADIATION INDUCED DAMAGE TO ADENOSINE. [J]. Journal of Radiation Research and Radiation Processing, 1996,14(3):157-161,156. DOI：

摘要

高压液相色谱分析发现，固态腺嘌呤核苷（AR）在20 KeV N

离子束辐照下所释放的碱基量很少。但紫外光谱测试表明，离子束辐照后的AR样品在1mol/L NaOH或pH0.5 H

的处理下，碱基的产生量将显著增加，且平均约有15%的受损AR分子可产生碱基A，而热处理将引起其紫外吸收光谱和碱基释放量的改变。另外，计算了AR分子损伤和碱基A分子产生的G值，发现它们有随剂量增大而减小的趋势。最后，分别以OH加合机制和氧化机制对强碱、强酸作用下碱基释放量增加的现象进行了解释。

Abstract

With HPLC

it was found that there was few free base A molecule being released from the solid adenosine (AR) irradiated by 20 keV N

ion beam

But with UV-spectra

it was known that t

he yield of base A increased in the the irradiated AR sample treated by 1 mol/L NaOH or pH0.5 H

. and about 15%of the damaged AR molecules was able to produce base A. With heat treatment

the UV spectra of the alkaline solution and the acid solution of irradiated AR samples and the yield of A were obviously changed. Besides

the G value of the damaged AR molecules and the produced A molecules were calculated and it was found that the G values had a tendency of decreasing with increasing dose. In addition

The phenomenon of the yield of A increasing in alkaline and acid solutions was respectively explained by OH-attach mechanism and oxidization mechanism.

关键词

离子束腺嘌呤核苷辐照损伤

Keywords

Ion BeamAdenosineIrradiation damage

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STUDIES ON THE N+ ION BEAM IRRADIATION INDUCED DAMAGE TO ADENOSINE

DOI：

摘要

Abstract

关键词

Keywords

references

N⁺离子束对腺嘌呤核苷的辐照损伤研究

STUDIES ON THE N⁺ ION BEAM IRRADIATION INDUCED DAMAGE TO ADENOSINE