酚羟基修饰超高交联吸附树脂的制备与性能

以明胶为分散剂,液体石蜡为致孔剂,交联反应中用溴乙烷代替有毒的氯甲醚,分别以苯酚和萘酚参与Friedel-Crafts后交联反应,成功制备了酚羟基修饰的超高交联聚苯乙烯吸附树脂LM-5和LM-6.树脂物理性能研究表明:LM-6具有更大的比表面积和酚羟基含量,且在苯胺和苯的混合溶液中对苯胺的选择系数高于LM-5;扫描电镜(SEM)分析表明,两种超高交联吸附树脂符合纳米吸附高分子材料特征.选择性吸附及吸附平衡研究表明:树脂LM-6在水体系中对苯胺和苯的吸附均以物理吸附为主,对苯胺的吸附过程伴随有化学吸附,对苯胺的吸附焓在氢键吸附焓范围内;由于氢键的形成,LM-6对苯胺的吸附量明显高于对苯的吸附量;pH值在1.0~5.0时,LM-6对苯胺的吸附量略有增加,而对苯的吸附量显著下降,对苯胺的选择系数迅速增加.     

Performance of Sequencing Biofilm Batch Reactor（SBBR） under Micro-aerobic Condition for Aniline-Contaminated Wastewater Treatment

The performance of sequencing biofilm batch reactor（ SBBR） under micro-aerobic condition for aniline-contaminated wastewater treatment was investigated in this study. Dissolved oxygen（ DO） and aniline concentrations were selected as the operating variables to analyze,model,and optimize the process. In order to analyze the process,5 dependent parameters,chemical oxygen demand（ COD）,aniline,ammonium,total nitrogen（ TN）,and total phosphorous（ TP） removal as the process responses were studied. From the results, increase in DO concentration could promote the removal of COD,aniline,ammonium,and TN,while increase in aniline concentration has a slightly negative impact on the removal of pollutants. The optimum DO concentration was found to be 0. 4-0. 5 mg /L. The removal efficiencies for COD,aniline,ammonium,and TN at the optimum point（ DO concentration0. 5 mg /L,aniline concentration 11 mg /L） were 95. 84%,100%,75. 72%,and 45. 39%,respectively. The oxidative deamination was the main degradation method for aniline under micro-aerobic condition. Simultaneously nitrification-denitrification（ SND）process performed under micro-aerobic condition and about 20%-40% nitrogen was removed by SND.     

嘧霉胺氯乙酸盐的晶体结构及杀菌活性

为寻找高活性的嘧啶类杀菌剂,由N-(4,6-二甲基嘧啶-2-基)苯胺(嘧霉胺)和氯乙酸在无水乙醇介质中反应合成了新化合物嘧霉胺氯乙酸盐,通过元素分析、红外分析、核磁共振氢谱分析对其结构进行了确证,用X射线单晶衍射测定了晶体结构,并对其杀菌活性进行了测试.结果表明:嘧霉胺氯乙酸盐晶体属于单斜晶系,空间群P4(2)/n,晶胞参数为: a=(1.9604±0.0004)nm,b=(1.9604±0.0004)nm,c=(0.7542±0.0003)nm,β=90°,V=(2.8986±0.0013)nm~3,D_c=11324g·cm~3,Z=8,F(000)=1232,μ=0.27mm~(-1);嘧霉胺氯乙酸盐晶体结构中,氯乙酸根阴离子和N-(4,6-二甲基嘧啶-2-基)苯胺基阳离子之间通过 N-H 和O形成的氢键连接在一起;在阳离子中,嘧啶环和苯环形成的二面角是(7.59±0.04)°;该化合物具有优异的杀菌活性.     

胺化超高交联吸附树脂的制备及其吸附热力学

超高交联树脂上负载不同的胺基,制备了3种不同质量摩尔浓度的胺基修饰的吸附树脂,研究了其对水体系中苯酚和苯胺的静态吸附行为和热力学性质.结果表明:树脂对苯酚和苯胺的吸附量均随着胺基质量摩尔浓度增加而下降,但树脂对苯胺的吸附量下降更大.回归方程的相关因子都大于0.99,表明Langmuir和Freundlich方程均能较好地描述苯酚和苯胺在3种树脂上的吸附行为,对苯酚的吸附是物理吸附和氢键吸附的共同作用,而对苯胺的吸附以物理作用为主.所有Freundli-ch拟合方程的指数均大于1,对苯酚和苯胺的吸附均为优惠吸附.热力学数据表明:吸附均是放热过程,吸附质在树脂表面的吸附是自发过程.吸附嫡变绝对值随树脂中胺基质量摩尔浓度增加而增加,胺基使吸附质与树脂结合更为紧密.     

盐酸厄洛替尼基因毒性杂质液相色谱-质谱联用分析方法学验证

建立了一种液相色谱-质谱联用法对盐酸厄洛替尼片中基因毒性杂质3-乙炔苯胺含量的测定方法。采用ESI离子源正离子多反应监测（MRM）模式,选择离子对118→75、118→91进行测定。色谱柱为Thermo Hypersil GOLD C8（100 mm×4.6 mm,3 μm）,流动相为甲醇和水,梯度洗脱,流速为0.4 mL/min,柱温为35℃。结果表明：该方法中3-乙炔苯胺的检测质量浓度在1.0～20 ng/mL 的范围内呈良好的线性关系,R²= 0.999 4;精密度实验的相对标准偏差（n=6）为1.13%,低、中、高浓度的加标回收率（n=3）为90.1%～106.1%。该方法灵敏度高、专属性好、精密度高,满足盐酸厄洛替尼片中基因毒性杂质3 乙炔苯胺含量的测定要求。     

膜萃取处理高浓度苯胺废水膜传质动力学

采用膜萃取新工艺处理高浓度苯胺废水.工艺中料液侧苯胺分子透过无孔硅橡胶膜与萃取液侧的HCl反应生成苯胺盐酸盐达到分离富集的目的.实验考察了料液流量、反应温度等因素对膜萃取性能的影响,分析了萃取回收率、HCl质量分数及萃取液pH等对系统的影响,并考察了该工艺对绿源药业工业含苯胺废水的应用效果.实验发现:无孔硅橡胶膜对苯胺分子有较稳定的透过性和较高的渗透通量;总传质系数与温度之间符合Arrhenius关联式.对系统进行物料衡算,发现苯胺的回收率维持在93%以上.在进水流量Fw=3.05L.d-1,T=323 K,pH≈1,膜管长L=18 m的条件下,模拟废水苯胺去除率可达97%.在上述操作条件下,处理绿源药业工业苯胺废水,苯胺去除率亦在97%以上.     

Studies of Several Systems with Air Electrode Electro-Synthesizing H_2O_2 on the Spot for Degr ading Aniline in Aqueous

0　ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｍｅｔｈｏｄｏｆｍｉｎｅｒａｌｉｚｉｎｇｏｒｇａｎｉｃｔｏｘｉｃａｎｔｓｉｎｔｈｅｗａｓｔｅｗａｔｅｒｂｙｇｅｎｅｒａｔｉｎｇ·ＯＨｒａｄｉｃａｌｓｈａｓｂｅｃｏｍｅｆｏｃｕｓｏｆｃｈｅｍｉｃａｌｔｈｅｏｒｉｅｓａｎｄｔｅｃｈｎｉｃａｌｒｅｓｅａｒｃｈｅｓｉｎｔｈｅｅｎｖｉｒｏｎｍｅｎｔｐｒｏｔｅｃｔｉｏｎ[1] .Ｂｅｃａｕｓｅ·ＯＨｒａｄｉｃａｌｉｓａｓｔｒｏｎｇｏｘｉｄｉｚｅｒｗｉｔｈｓｔａｎｄａｒｄｐｏｔｅｎｔｉａｌｏｆ2 .80Ｖ ,ｗｉｔｈｉｔ,ｔｈｅｓｔａｂｌｅ…     

The characteristic of electrochemical oxidation of aniline on SnO2/Ti electrode

The characteristic of electrochemical oxidation of aniline on SnO₂/Ti electrode is studied. The results indicate that SnO₂/Ti electrode dopedF plays a wonderful role in the oxidation of aniline comparing with Pt electrode. The kinetics factors that influence the oxidation rate of aniline on the SnO₂/Ti electrode are determined by the dissolving of the film on the electrode. The dissolving of the film consisted of intermediate products on the electrode is the slow step. The effects of aniline concentration, pH in aniline solution and the current density (i) on the rate of aniline oxidation, the complexity of intermediate products and the basic category of the intermediate products consisted of the film are introduced. Foundation item: Supported by the National Natural Science Foundation of PRC(10971023) Biography: Wany Yu-ling (1975-), female, Master, research direction: photochemical catalysis and electochemical catalysis.     

高效液相色谱法测定对氨基苯磺酸中的有关杂质

用反相高效液相色谱法同时测定工业对氨基苯磺酸中的几种微量杂质 (邻氨基苯磺酸、间氨基苯磺酸、苯胺).以0.1 mol/L 磷酸二氢铵为流动相,采用SUPELCOSIL LC-18-DB(5 μm,150 mm×4.6 mm I.D.)色谱柱,紫外检测波长 205 nm,流速1 mL/min.方法快速准确、灵敏度高、重现性好,测定结果令人满意.     

苯胺的无电聚合

提出了一种新的聚合方法——无电聚合。在没有外电流的情况下,溶液中的苯胺分子在具有催化活性的铂或钯基底表面上被溶解氧氧化为聚苯胺膜。与化学镀的原理类似,苯胺的无电聚合反应过程包含阴极半反应和阳极半反应两个电化学反应。