弧光放电产生的低能氮离子对胞嘧啶水溶液损伤作用的研究  

PRELIMINARY STUDY ON THE DAMAGE EFFECTS OF LOW ENERGY N^+ FOR CYTOSINE SOLUTION

作　　者：石怀彬[1] 邵春林[1] 王相勤[1] 余增亮[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031

出　　处：《辐射研究与辐射工艺学报》2001年第3期231-235,共5页Journal of Radiation Research and Radiation Processing

基　　金：国家自然科学基金 (2 9772 0 33)

摘　　要：利用N2 常压弧光放电产生低能N+ ,经电场加速后注入胞嘧啶 (C)水溶液 ,研究了低能N+ 作用后胞嘧啶水溶液的 pH值、紫外、红外及核磁共振光谱的变化。结果表明 ,溶液PH值由于N+ 的注入而逐渐下降 ,低能N+ 对溶液样品造成了多种形式的损伤 ,形成丰富多彩的损伤产物。其中不仅包括水溶液中多种损伤碎片之间的重新化合 ,还包括N+ 与溶液中元素形成新的化学基团 ,继而与其它碎片结合形成产物 ,使外来的N+ “沉积”在溶液样品中。Low energy N + ions were produced by gas arc discharge and the ions were accelerated into cytosine ( C ) aqueous solution. Changes in pH, UV, FT-IR and 1H-NMR spectra of C solution after this kind of ions' action were investigated. It was showed that pH of the solution decreased with N + implantation, N + caused various damages on C molecules and many new substances were founded. These new substances were synthesized not only by combination of the damage fragments in the solution, but also by 'deposition' of N + from outside.

关 键 词：弧光放电 低能离子 胸嘧啶水溶液 辐射损伤 

分 类 号：Q691[生物学—生物物理学] R818.74[医药卫生—放射医学]