水的辐射分解过程和产物及其对环境的影响

水受到各种类型的电离辐射后会分解产生高活性自由基和分子产物。这些分解产物有很高的反应性，可通过改变当地的氧化还原条件而影响周围环境。分别分析了水辐解产生的氧化性产物和还原性产物对环境的影响，并对未来的研究工作提出展望。     

高浓度丙烯腈废水治理项目启动

吉林石化公司丙烯腈厂与清华大学合作进行的膜分离-辐射分解-生物处理组合技术治理高浓度丙烯腈废水研究项目，日前正式启动。     

The spectral, acid-base equilibrium and reduction potential properties of indole hormone radicals ： a pulse radiolysis study

The Absorption spectral, acid-base equilibrium potential properties and formation and decay kinetics of four kinds of radicals from natural existing indole hormones were studied by pulse radiolysis.     

Development of picosecond pulse radiolysis system at Waseda University

A compact pulse radiolysis apparatus using a BNL-type s-band photocathode RF gun is now under development at Waseda University. The laser pulse is used for excitation of the photocathode and for generation of white light, which is used for analyzing light in the pulse radiolysis.     

水辐解产物对深处置高放废物容器侵蚀模似研究

采用＾６０Ｃｏγ－辐射源、人工模拟花岗岩地下水和高温高压实验装置，在模拟深处置条件下（处置深度＝１０００ｍ，ｔ＝１９０℃，ｐ＝２０ＭＰａ，ｐＨ＝７．２），实验研究了花岗岩地下水辐射分解产物对深处置高放废物金属容器材料的氧化侵蚀强度。由实验得出，与无辐射情况相比较，花岗岩地下水吸收１４０ｌ－Ｇｙγ辐照后，水辐射分解产物对不同金属容器材料的氧化侵蚀强度分别增大：铜材－１．５倍，铝材－２．８倍，熟铁－４     

Analyses of organics in irradiated aqueous N,N-diethylhydroxylamine solution

The organics in γ-ray irradiated aqueous N, N-diethylhydroxylamine (DEHA) solution, which is used as a reducing agent in reprocessing spent nuclear fuel, were analyzed with gas chromatography equipped with FFAP capil-lary column and flame-ionization detector. It was found that irradiated DEHA solutions contained acetaldehyde, ethanol, and acetic acid. For DEHA of 0.2 mol/L irradiated to 10～1000 kGy, the concents of acetaldehyde, ethanol and acetic acid are (9.7～18.7)×10-3, (0.4～23.4)×10-3 and (6.5～11.7)×10-3 mol/L, respectively. The concentration of DEHA decreases obviously with the dose.     

153Sm-EDTMP体内外的竞争结合分析

采用Ｗａｔｅｒｓ ＨＰＬＣｃｏｌｕｍ ｎ ｕｌｔｒａｈｙｄｒｏｇｅｌＴＭ１２０ μｍ （７．８ ｍ ｍ ×３００ ｍ ｍ ）ＨＰＬＣ凝胶色层柱,对１５３Ｓｍ Ｃｌ３、１５３Ｓｍ －ＥＤＴＭＰ分别与半胱胺酸、牛血清蛋白（ＢＳＡ）、小鼠血清进行了体外竞争结合分析;１５３Ｓｍ Ｃｌ３、１５３Ｓｍ －ＥＤＴＭＰ小鼠尾静脉注射后,对肝匀浆提取液和尿样进行了ＨＰＬＣ分析。ＨＰＬＣ分析条件：流动相０．８５ ｍ ｏｌ／ｍ ＬＰＢＳ,流速０．５ ｍ Ｌ／ｍ ｉｎ,进样量１５ μＬ。结果表明：游离的１５３Ｓｍ Ｃｌ３ 既可在体外与鼠血清相结合,又可在体内与肝蛋白结合;１５３Ｓｍ －ＥＤＴＭＰ在体内体外竞争结合分析中,它不与鼠血清、半胱胺酸、ＢＳＡ结合,当ｎ（ＥＤＴＭＰ）∶ｎ（Ｓｍ ）＝ １∶１ 时在体内的肝匀浆提取液中有滞留,比值≥５∶１ 未观测到任何滞留,说明１５３Ｓｍ －ＥＤＴＭＰ在体内是稳定的。１５３Ｓｍ －ＥＤＴＭＰ在有效使用期６ ｄ 内外观颜色变深,但ＨＰＬＣ分离分析未观测到辐射分解产物,大剂量包装放置２ 个月后ＨＰＬＣ紫外图中出现降解小峰,２ 种情况下的放射化学纯度都大于９８ ％ 。