固体催化剂存在时KCN水溶液的辐解—粘土、钯黑对生命分子生成的影响  

RADIOLYSIS OF KCN AQUEOUS SOLUTION IN THE PRESENCE OF SOLID CATALYSTS——ACTION OF CLAY AND PD-BLACK ON THE FORMATION OF BIOMOLECULES

作　　者：戚生初[1] 董长治[1] 吴季兰[1] 

机构地区：[1]北京大学技术物理系

出　　处：《辐射研究与辐射工艺学报》1989年第2期28-33,共6页Journal of Radiation Research and Radiation Processing

基　　金：中国科学院科学基金资助的课题

摘　　要：本工作研究了N_2饱和KCN-粘土,N_2饱和KCN-钯黑和H_2饱和KCN-钯黑水溶液体系的γ辐解,用纸色谱法测定了辐解产物谱。少量粘土(含0.2g/5 ml)对氨基酸产额略有增加,但较多粘土(含2.7g/5ml)存在则抑制氨基酸生成。固体催化剂(钯黑,粘土等)对CN^-或HCN有催化聚合作用,形成的聚合物是一种混合物,酸水解时生成的氨基酸种类和产额很低。粘土样品中存在较复杂生命分子的证据,它们是:(1)样品与Folin-Phenol试剂呈阳性反应;(2)样品酸水解时释放出氨基酸,这表明粘土对较复杂生物分子形成有催化作用。不同固体催化剂研究结果表明,在研究CN^-或HCN在固体物质表面的化学演化过程时,不宜采用活性很高的催化剂。γ-radiolysis of KCN aqueous solution contained clay and pd-blackhas been studied. The product spectrum and the main product yields have also beendetermined by paper chromatography. A small amounts of clay (0 .2 g/5 ml) canlightly increase the yields of amino acids, but a large quantities of clay (2 .7g/5 ml)can inhibit the formation of amino acids. Some solids (such as clay, pd-black) cancatalytically polymerize CN^- ion to form polymers which produce some amino acidson hydrolysis. There exist some evidence-about peptide or quasi-peptide substancesin the clay-containing samples. The samples show positive reaction to Folin-Phenolreagent and amino acids are formed on hydrolysis.

关 键 词：粘土 钯黑 氨基酸 氰化钾 生命分子 

分 类 号：Q691.2[生物学—生物物理学]