无孔硅胶反相键合相用于生物大分子的高效液相色谱分离研究

使用２．１μｍ的单分散无孔硅胶作为基体,表面化学键合Ｃ＿８和Ｃ＿（１８）非极性固定相,并在这种键合相和相关的大孔硅胶上考察了蛋白质分离的色谱性能。实验结果表明,梯度冲洗下该固定相能使核糖核酸酶、胰岛素、溶菌酶、牛血清蛋白和卵清蛋白得到好的分离,分析速度快、效率高,为生物大分子的高效液相色谱分离开辟了另一条途径。     

Special Issue “Quantum computation complexity theory and quantum network theory” (Preface)

International Journal of Theoretical Physics -     

用高效液相色谱法分析银杏黄酮时几个问题的探讨

研究了用高铲液相色谱法分析银杏叶的中黄酮含量时几个主要环节的操作条件,包括水解液组成,水解温度和时间,论证了在３７０ｎｍ波长下检测时,可用槲皮素下标准物质方便地求出桷皮素,山萘酚和异鼠纱３种黄酮的含量。水解液是５．５％ＨＣｌ甲醇庆８５￣９０℃回流１．３ｈ。采用Ｂｉｏ－ＳｉｌＯＤＳ５μｍ柱,１５０×４．０ｍｍＩ．Ｄ。,甲醇／０．４％磷酸水溶液（５７：４２）流动相,ＵＶ－３７０ｎｍ检测。上率和分析精度     

去甲万古霉素键合手性固定相拆分β-受体阻滞剂类药物及其结构类似物的研究

以去甲万古霉素为手性选择剂制备了大环抗生素类手性固定相去甲万古霉素键合手性固定相(NVC-CSP)。在极性有机模式下对普萘洛尔、美托洛尔、阿替洛尔及烯丙洛尔等4种β-受体阻滞剂类药物及其结构类似物的外消旋体进行了手性拆分的研究,并考察了流动相组成、酸碱添加剂用量、温度以及流速对分离的影响。研究发现:在此模式下手性物质的保留均随着流动相中甲醇含量的增加而减弱,手性分离因子（α）随着流动相中甲醇含量的增加而升高;随着柱温的升高,大部分溶质在色谱柱上的保留减弱,α值降低;在一定范围内降低流速有利于对映体的分离;     

化学电离质谱在大气痕量物种原位测量中的应用

本文简要介绍了化学电离质谱的基本原理、仪器构成及特点,总结了化学电离质谱在大气痕量物种,如无机酸H2SO4、HNO3,自由基OH·HO2·RO2·可挥发性有机物和气溶胶等的原位测量中取得的成果,最后对其未来的发展趋势作了展望.     

水飞蓟素中活性黄酮的测定

采用高效液相色谱梯度淋洗法,使水飞蓟素中的７种主要成分得到完全分离。方法简便、快速,能单独测得水飞滨的含量,与紫外分光光度法相比,具有较好的重复性,变异系数在２％以下。     

Capillary Electrochromatography with Monolithic Poly(styrene‐co‐divinylbenzene‐co‐methacrylic acid) as the Stationary Phase

A new kind of monolithic capillary electrochromatography column with poly(styrene‐co‐divinylbenzene‐co‐methacrylic acid) as the stationary phase has been developed. The stationary phase was found to be porous by scanning electron microscopy and the composition of the continuous bed was proved by IR spectroscopy to be the ternary polymer of styrene, divinylbenzene, and methacrylic acid. The effects of operating parameters, such as voltage, electrolyte, and organic modifier concentration in the mobile phase on electroosmotic flow were studied systematically. The retention mechanism of neutral solutes on such a column proved to be similar to that of reversed‐phase high performance liquid chromatography. In addition, fast analyses of phenols, chlorobenzenes, anilines, isomeric compounds of phenylenediamine and alkylbenzenes within 4.5 min were achieved.     

Antosik-Mikusinski Matrix Convergence Theorem in Quantum Logics

In this paper we establish the order topology type Antosik-Mikusinski infinite matrix convergence theorem in quantum logics. As application, we prove the Hahn-Schur summation theorem in quantum logics, too.     

A full-invariant theorem and some applications

Let (X,τ₁) and (Y,τ₂) be two Hausdorff locally convex spaces with continuous duals X′ and Y′, respectively, L(X,Y) be the space of all continuous linear operators from X into Y, K(X,Y) be the space of all compact operators of L(X,Y). Let WOT and UOT be the weak operator topology and uniform operator topology on K(X,Y), respectively. In this paper, we characterize a full-invariant property of K(X,Y); that is, if the sequence space λ has the signed-weak gliding hump property, then each λ-multiplier WOT-convergent series ∑_iT_i in K(X,Y) must be λ-multiplier convergent with respect to all topologies between WOT and UOT if and only if each continuous linear operator T :(X,τ₁)→(λ^β,σ(λ^β,λ)) is compact. It follows from this result that the converse of Kalton's Orlicz–Pettis theorem is also true.