Synthesis and application of a hydrophobic hypercrosslinked polymeric resin for removing VOCs from humid gas stream

A hydrophobic hypercrosslinked polymeric resin LC-1 was prepared and characterized.The properties of LC-1 resin were compared with those of a commercial hypercrosslinked polymer NDA-201 resin.In addition,the dynamic adsorption of trichloroethylene(TCE)onto LC.1 under dry and humid conditions at 303 K was investigated,the result shows that LC-1possesses high hydrophobic property and can remove TCE from gas stream without effect of high humidity efficiently.     

Novel chiral thioureas for highly enantioselective Michael reactions of malonates to nitroalkenes

Highly efficient Michael addition reactions of malonates to nitroalkenes catalyzed by novel chiral thioureas derived from optically pure BINOL and amino acids are reported. Various trans-nitroalkenes reacted with malonates affording the desired products in up to 95% yield with excellent enantioselectivities (up to 97% ee).     

薄层原位荧光扫描测定锗-132制剂中倍半氧双羧乙基锗含量的研究

本文报道由作者建立的薄层色谱法,样品在硅胶薄层板上展开后,以苯芴酮显色,再在碘钨灯下照射可使锗-132衍生成荧光化合物,从而可用原位荧光扫描(外标法)定量,已用于倍半氧双羧乙基锗(锗-132)原料和制剂的含量测定及稳定性研究。经3批原料、9批注射液、3批口服液样品的222个测试数据统计,C.V.值为2.29%,同板的C.V.值为1.5%～2.7%(n=7～10);加样回收率101.5%,最低检出限为0.12μg。     

火焰原子吸收光谱法测定淋巴细胞中微量的铜和锌

本文采用样品添加曲线法测定克山病非病区正常人及病区正常人潜，慢性克山病患者淋巴细胞中微量铜和锌，方法简便，快速，灵敏度高和精确度好，能有效的排除干扰，直线相关系数Cu:r=1.000,Zn:r=0.9992。相对标准偏差为2．3％－6．4％。回收率为93％－104％。结果表明4组人群Cu水平无差异。潜、慢克山病患者Zn/Cu比值增大。     

抗凝血肝素化聚（醚—酰胺胺—脲—氨酯）的研究

合成了一种含有聚酰胺胺链段的聚(醚—酰胺胺—脲—氨酯)(PEAUU)嵌段共聚物。这种嵌段共聚物较诸相应的聚酰胺胺,有较好的机械性能和对稀酸、稀碱以及生理盐水的良好稳定性。体外试验表明,它本身就具有良好的抗凝血性,经过肝素处理,PEAUU表面与肝素形成了聚电解质复合物,抗凝血性能又有进一步提高。     

电热原子吸收光谱测定锗时钯的基体改进作用及在食品分析中的应用

本文建立了钯为基体改进剂,电热原子吸收法测定食品中微量锗的方法。该法的检测限为22×10~(-13)g,特征量为8×10~(-13)g。讨论了钯基体改进剂提高锗灵敏度和灰化温度的机理,认为主要是灰化阶段锗与钯在石墨管表面发生固相反应的结果。     

两种吸附树脂对4B酸吸附行为的比较研究

研究了新型复合功能吸附树脂NDA-99和超高交联大孔吸附树脂JX-101对水溶液中4B酸(对甲苯胺-2-磺酸)的静态吸附行为和热力学特性，结果表明，NDA-99树脂对4B酸的吸附量明显大于JX-101树脂，两种树脂对4B酸的吸附均符合Freundlich吸附等温方程．其中，JX-101对4B酸的吸附属于物理吸附：NDA-99由于树脂表面存在弱碱性官能团，对4B酸的吸附表现为物理吸附和化学络合协同作用。     

含油废水处理技术研究进展

在介绍原“老三套”工艺技术的基础上，综述了几种新型除油工艺，混凝法、膜分离法、高吸油树脂法．在对多种不同的工艺技术尤其是树脂吸附法的应用现状和最新进展进行分析、比较后，对各种方法的特点作了总结，并展望其研究与应用的发展趋势。     

GC法测定瑞草油中四组分与鉴别桉油

以GC法测定瑞草油各组分时,采用20% PEG-20 M固定相,正葵醇为内标,柱温以每min 4℃从170℃升至210℃。四组分的方法回收率、变异系数(n=5)、及其线性浓度范围分别为:樟脑97.44±1.04%、9.0～130mg/mL;薄荷脑99.68±0.97%、28.0～40.0 mg/mL;水杨酸甲酯97.16±0.48%、4.0～6.0 mg/mL;水杨酸乙酯100.44±1.13%、4.0～6.0 mg/mL。经测定三批样品的结果表明,本法具有操作简单、快捷、准确等优点。     

Effects of humic acids and microorganisms on decabromodiphenyl ether, 4,4′-dibromodiphenyl ether and anthracene transportation in soil

In this study, effects of humic acids (HA) and microorganisms on the migration of hydrophobic organic contaminants (HOCs), decabromodiphenyl ether (BDE-209), 4,4′-dibromodiphenyl ether (BDE-15) and anthracene, in soils were examined. More soil particles were dispersed into the colloidal phase (0.22-1 μm) in the presence of HA and/or microorganisms as a result of increased erosion and friction. The study suggested that PBDEs (BDE-209 and BDE-15) and anthracene in soils would be transported to other places by...