微交联聚合物降滤失剂的合成与性能

针对深井、超深井钻井液体系中的降滤失剂受长时间高温、高矿化度作用易降解的问题，以氮丙啶与3-氯丙烯反应制得-N-烯丙基氮丙啶（ALAI）； ALAI与乙二胺反应制得四烯基交联剂单体（EAAD）； EAAD与丙烯酰胺（AM）和2 丙烯酰胺基-2-甲基丙磺酸（AMPS）发生水溶液自由基共聚反应，合成了微交联共聚物降滤失剂(PAAT)，其结构和性能经¹H NMR, IR和TG-DTG表征。结果表明：PAAT可抗220 ℃高温，在高温、高矿化度条件下可维持钻井液的滤失量与流变性能，API滤失量均低于4.0 mL，高温高压滤失量均小于13.0 mL。     

Enhanced deep-red emission in donor-acceptor molecular architecture: The role of ancillary acceptor of cyanophenyl

Cyanophenyl as ancillary acceptor to modify donor-acceptor compound,plays an effective role in shifting the emission color to deep red and maintaining the luminescent efficiency.     

Application of Nafion／Cobalt Hexacyanoferrate Chemically Modified Electrodes for the Determination of Electroinactive Cations by Ion Chromatography

Ｉｎｔｒｏｄｕｃｔｉｏｎ　　Ｉｏｎｃｈｒｏｍａｔｏｇｒａｐｈｙ (ＩＣ)ｈａｓｂｅｅｎｒｅｃｏｇｎｉｚｅｄａｓａｕｓｅｆｕｌｍｅｔｈｏｄｆｏｒｔｈｅｓｅｐａｒａｔｉｏｎｏｆｉｎｏｒｇａｎｉｃａｎｉｏｎｓａｎｄｃａｔｉｏｎｓｓｉｎｃｅｉｔｓｉｎｔｒｏｄｕｃｔｉｏｎｂｙＳｍａｌｌｅｔａｌ .ｉｎ 1975 .1ＡｓｉｇｎｉｆｉｃａｎｔｔｒｅｎｄｉｎｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆＩＣｍｅｔｈｏｄｉｓｓｅａｒｃｈｆｏｒｓｅｎｓｉｔｉｖｅａｎｄｕｎｉｖｅｒｓａｌｄｅｔｅｃｔｉｏｎｍｅｔｈｏｄｓ .Ｔｈｅｍａｉｎｄｅｔ…     

多孔岩心的渗透性

The relaxation properties of water saturated in porous core are discussed and the distribution of proton transverse relaxation time and bi-exponential model of longitudiual relaxation time are obtained, which provide an illustration for two-model of fluids saturated in porous media. The cutoff value of T_1 based on relaxation specific property of fluids in porous core is adopted to improve the correlation between permeability and ?4T1b2.     

5-Br-PADCAP分光光度法测定血清锌

为建立快速、简便、灵敏的分光光度法测定血清锌 ,在表面活性剂TritonX -1 0 0存在下 ,用 2 -(5 -溴 -2 -吡啶偶氮 ) -5 -[N ,N -二羧基甲基 ]苯酚 (5 -Br-PADCAP)作显色剂 ,不去蛋白分光光度法测定血清锌。结果表明 ,锌络合物最大吸收波长为 5 5 7nm ,线性范围 0～ 5 0 0μmol L ,摩尔吸光系数为 1 1 2× 1 0 5L·mol-1·cm-1。回收率为 99 9% ,批内变异系数 (CV)为2 1 % ,批间变异系数为 2 9% ,与原子吸收分光光度法 (x)比较具有良好的相关性 ,y =1 0 1 0x-0 1 5 4,r=0 991 8,P >0 0 5。可见本法测定血清锌不必去蛋白、用血量少、方法简便、灵敏可靠 ,适合临床应用     

LaNi4.7Al0.3单颗粒微电极电化学行为的研究

报道了一种单颗粒微电极制备新方法, 并研究了LaNi4.7Al0.3球形单颗粒微电极的电化学行为.     

新显色剂二溴对甲基偶氮甲磺光度测定稀土的研究和应用

研究了新显色剂二溴对甲基偶氮甲磺光度测定铈组稀土总量的方法，在酸性介质中，试剂与以铈组稀土为代表稀土形成蓝色配合物，在６４４ｎｍ有最大吸收，铈含量在０～１５μｇ／２５ｍｌ范围内符合比耳定律，方法应用于钢铁中铈组稀土总量的直接测定，发现其准确性和重视性良好。     

Characterization and separation of Al13 species using gel-filtration chromatography

A polyaluminum chloride (PAC) sample was prepared using a slow alkaline titration method. The Bio-Gel P-100 gel column chromatographic technique was used to separate and characterize the various forms of aluminum present in the prepared PAC solution. The effluents from a gel column were monitored using online chemical method: Al-Ferron timed complexation spectrophotometry and by ²⁷Al nuclear magnetic resonance (NMR) spectroscopy. Effects of different experimental conditions such as eluent flow rate, ionic strength and pH on separation of Al₁₃ were investigated. Experimental results indicated that molecule size exclusion was not the only parameter affecting the column chromatographic separation efficiency of Al₁₃ but molecule charge as well. Reducing the eluent flow rate, increasing the ionic strength and suitable pH resulted in increase in the separation efficiency. Experimental results clearly indicated that by varying the experimental conditions, it is possible to produce pure Al₁₃ species using a gel column chromatographic technique.     

Characterization and separation of Al13 species using gel-filtration chromatography

A polyaluminum chloride (PAC) sample was prepared using a slow alkaline titration method. The Bio-Gel P-100 gel column chromatographic technique was used to separate and characterize the various forms of aluminum present in the prepared PAC solution. The effluents from a gel column were monitored using online chemical method: Al-Ferron timed complexation spectrophotometry and by ²⁷Al nuclear magnetic resonance (NMR) spectroscopy. Effects of different experimental conditions such as eluent flow rate, ionic strength and pH on separation of Al₁₃ were investigated. Experimental results indicated that molecule size exclusion was not the only parameter affecting the column chromatographic separation efficiency of Al₁₃ but molecule charge as well. Reducing the eluent flow rate, increasing the ionic strength and suitable pH resulted in increase in the separation efficiency. Experimental results clearly indicated that by varying the experimental conditions, it is possible to produce pure Al₁₃ species using a gel column chromatographic technique.     

己烯在Ru(1010)表面价带电子特性研究

在200 K以下己烯（C6H12）可以在Ru()表面上以分子状态稳定吸附.偏振角分辨紫外光电子谱（ARUPS）结果表明,己烯分子在垂直于衬底表面并沿衬底表面<>晶向的平面内,己烯分子的轴向沿<>晶向倾斜.随着衬底温度的提高,到200 K以上,己烯分解生成新的碳氢化合物.己烯分解后,πCH分子轨道能级向高结合能方向移动了0.2 eV,同时己烯中C的1s能级向低结合能方向移动了 0.3 eV.