氨基酸及脱氧核糖核酸（DNA）对三种亚毫米波长激光吸收作用的研究  

Absorptivity Analyses on Amino Acid and DNA Irradiated with Three Wavelengths of CW FIR Optically Pumped Lasers

作　　者：朱泽瑞[1] 向洋[1] 熊守仁[1] 苏锦文[1] 史国良[1] 

机构地区：[1]湖南师范大学生物系,长沙电力学院,中国科学院上海技术物理所

出　　处：《高技术通讯》1994年第11期4-9,共6页Chinese High Technology Letters

摘　　要：采用１１８．８μｍ、４３２．６μｍ和４４７．２μｍ三种亚毫米波长的远红外激光辐照１８种氨基酸和ＤＮＡ分子粉末样品，直接测定样品对远红外激光的吸收率。发现：①三种不同波长的激光辐照氨基酸或ＤＮＡ，样品对激光能量吸收率的差异达到极显著水平（Ｆ＝２１．７２，其中１１８．８μｍ和４４７．２μｍ波长被吸收的作用极显著地大于４３２．６μｍ。②１８种氨基酸和ＤＮＡ样品对远红外激光都存在吸收作用，但相互之间的差异不明显（Ｆ＝１．４１），而对于波长的敏感性却有较大的差异。其中，Ｌ－色氨酸的敏感性最强（ＣＶ＝９０．４），谷氨酸次之（ＣＶ＝８１．３），而ＤＬ－ｄ－氨基丙酸最弱（ＣＶ＝３１．６）。③氨基酸或ＤＮＡ对远红外激光的这种吸收作用的波长敏感性，与氨基酸或ＤＮＡ分子结构中某些特定的基团密切相关。The laser absorptivity analyses on 18 types of molecular power samples of amino acid and DNAirradiated with 3 wavelengths(118.8μm,432.6μm,and 447.2μm)of CW FIR optically pumped lasershave been made. The results show:1.The absorption difference arrives at a significant level:F=21.7172,and the absorptivities to the wavelengths of 118.8μm and 447.2μm are obviously greater thanthat to 432.6μm. 2.All the eighteen types of amino acid and DNA samples are some absorptive,but thedifferences of absorption between them are not significant(F=1.41).Moreover,the absorptivities of themvary obvionsly when wavelength changes.The extreme examples are tryptophan(the highest,CV=90.4)and alanine(the lowest,CV=31.6).3.The absorption sensitivities to laser wavelength are related tosome special characteristic groups in the molecules of them.

关 键 词：氨基酸 DNA 激光 波长 吸收率 

分 类 号：Q517.02[生物学—生物化学] Q523.03