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991.
The photodegradation reaction rate of CHCl3 in TiO2 particulate suspension was imperoved significantly by HCl-treatment.The effect of HCl-treatment on the photocatalytic activity of TiO2 was strdied in a PEC cell by using Intensity-Modulated Photocurrent Spectroscopy(IMPS).The magntude of photocurrent response and the characteristic frequencies of the upper and lower semicircles in the complex plane of IMPS response were analyzed,and the ccathodic and anodic reaction processes of photogenerated holes and electrons were discussed.The increases in the cathodic and anodic photocurrent response and in the time constants of both cathodic and anodic reaction processes of photogenerated holes and electrons were discussed.The increases in the cathodic and anodic photocurrent response and in the time constants of both cathodic and anodic reaction processes indicate that HCl-treatment leads to the improvement of the photocatalytic activity of TiO2 and a change of the photocatalytic kinetic mechanism. 相似文献
992.
尼龙—1010SAXS研究 总被引:2,自引:0,他引:2
用一维电子密度相关函数方法,分析了国产尼龙-1010不同拉伸比时的SAXS现象,由实验相关函数曲线可算得长周期(L),中间层厚(d_(tr)),片晶层厚(d_?),非晶层厚(A_?),平均片层厚(d),积分不变量(Q),比内表面O_s以及(η_c-η_a)等数值及其变化规律。实验结果表明尼龙-1010的结晶结构是由结晶层、非晶层以及结晶-非品中间层三部分组成。 相似文献
993.
994.
IntroductionEnzymeimmunoassaybasedonaselectiveantigen antibodybindingandalabelenzymehasgainedincreas ingimportanceinrecentyears .Amongtheenzymesused ,horseradishperoxidase (HRP)isthemostwidelyusedenzymelabelbecauseofitshighspecificityandsensitivi ty .1 3 Flu… 相似文献
995.
用傅里叶变换红外光谱差减技术自动监测大气毒物的软件及应用 总被引:2,自引:1,他引:2
本文介绍了大气毒物傅里叶变换红外光谱自动差减定量软件,介绍了方法的原理和软件的结构与功能。该技术能够进行数据库的实时咨询,差减谱位的智能搜索和光谱自动差减定量,实现了大气毒物自动定量分析。运用于实际样品分析,快速准确,优于其它的傅里叶变换红外光谱定量技术。 相似文献
996.
本工作用外加驰豫试剂及反转门控去偶方式对菜籽油和“营养”油进行了~(13)C-NMR谱的定量测定。在归属各峰基础上,认为该两油脂都以甘油酯形式存在。提出了①多烯类结合脂肪酸占烯类总量的摩尔分数P;②烯碳数与饱和碳数之比R;③包括同种油脂及不同油脂间的油脂分子各类功能团的相对含量的测定计算表达式。 相似文献
997.
Study on the Phase Equilibrium of the Ternary System Ethanol-Cesium Carbonate-Water at 10, 30 and 50℃ 总被引:3,自引:0,他引:3
Introduction The salting out effect in the systems of aliphatic al-cohol-water is of industrial interest. The addition of or-ganic solvents to the aqueous solution of a salt normally decreases the solubility of the salt. So the method can be used for salting-out of inorganic salts to improve yield and purity.1-3 However, the phase diagrams of the inves-tigated systems are required as basic data. There are lots of aliphatic alcohol-water systems having been deter-mined. The 1-butanol-water-Na… 相似文献
998.
999.
Kui JIAO Tao YAN G Zeng Jian WANG College of Chemistry Molecular Engineering Qingdao University of Science Technology Qingdao College of Chemistry Chemical Engineering Ocean University of China Qingdao 《中国化学快报》2005,(5)
3,3′,5,5′-Tetramethylbenzidine(TMB)-H2O2-horseradish peroxidase(HRP) voltammetric enzyme linked immunoassay system1 has very high sensitivity, low detection limit and wide detection range for the determination of some plant viruses. However, the understanding of the mechanism of HRP catalyzed by H2O2 oxidizing TMB in this system is of significance. In the previous paper, we have reported the spectroelectro- chemical study of TMB on SnO2: F film optically transparent electrode in the … 相似文献
1000.
Thickness and stability of films formed by different surfactants are studied by means of thin film balance (TFB) technique to observe the formation and stability of the films. It is demonstrated that stable Newton black films (NBFs) can be easily obtained with non-ionic surfactants (C12E5, C12G2) than ionic surfactants (C12TAB, C16TAB). Common black film (CBF) was obtained with C16TAB at 5×10-3 mol/L, while the film of C12TAB is unstable. It has been demonstrated that the horizontal forces should also be taken into consideration for explaining film stability. 相似文献