zeta电位测试仪和phzpc一样吗

来源：蜘蛛抓取(WebSpider) 时间：2016-09-05 07:05 标签： zeta电位
求助：零电荷点（pHzpc）(零电荷点,电位,原位,配件,物理化学) - 有机|无机化学 - 生物秀
标题: 求助：零电荷点（pHzpc）(零电荷点,电位,原位,配件,物理化学)
摘要: 有没有各种化物的零电荷点（pHzpc）数据库？或者如何测量？谢谢1……
有没有各种化物的零电荷点（pHzpc）数据库？或者如何测量？谢谢1网友回复测量其zeta电位网友回复测量其zeta电位
在物理化学上有
你可以找下册书南京大学的
或者找一本电化学(electrochemistry)的实验书
很简单的网友回复所用是Zeta电位仪,如果配有能原位调节pH值的配件比较方便,否则手动调pH值结果将不是很可信.
测试前,将样品在溶剂中分散,最好是你在实验中的溶剂环境,这样更接近实验结果;然后上机测试,仪器会给出粒子表面的电势(带正电荷为+,负电荷为_).
如果配有能原位调节pH值的配件,只能手动条pH,直到电势为0,即为等电点.
你可以查一下哪家高校或研究所有这样的仪器,据我了解英国马尔文公司的Zeta电位仪可以原位调节pH值的配件配,你也可以问一下他们谁购买了他们的仪器.网友回复谢谢楼上的各位兄弟
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活性炭的zeta电位对各种染料吸附的影响3.活性炭对阴离子染料洋红的吸附
优质期刊推荐Adsorption characteristics of polyacetic amino acids onto hydrous γ-Al2O3
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, May 1985, Pages 197-215
Adsorption characteristics of polyacetic amino acids onto hydrous γ-Al2O3
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aDepartment of Civil and Environmental Engineering, Vanderbilt University, Nashville, Tennessee 37235 USAbEnvironmental Engineering Program, Department of Civil Engineering, University of Delaware, Newark, Delaware 19716 USA
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The adsorption characteristics of various polyacetic amino acids onto aluminum oxide (γ-Al2O3) were examined. Adsorption increased markedly with increasing proton concentration due to the formation of surface complexes between the polyanions and the surface hydroxo groups, i.e., AlOH2+. Electrokinetic data indicated a decrease in the pHzpc of γ-Al2O3 with increasing concentrations of ethylenediaminetetraacetic acid (EDTA) in solution, and the magnitude of the zeta potential was significantly reduced in proportion to the cumulative charge of anions adsorbed. This implied a definite specific chemical surface interaction in excess of electrostatic attraction. A quantitative model was formulated which considered the pH-dependent speciation of the oxide surface, speciation of the polyacetic amino acids, and electrostatic interactions based on the zeta potential measurements. This model proved valid over a wide range of pH (3–10) and several orders of magnitude for EDTA concentrations (10-6 to 10-3M). Surface binding energies ranged from 4.1 to 9.1 kcal/mole, supporting the hypothesis that hydrogen bond formation was responsible for the adsorption of these organic species.
Remember me君，已阅读到文档的结尾了呢~~
mination of migration quantity of cr, ni, cd, pb and as in food containers by magnetic carbon-coated iron nanoparitcles separationenrichment-inductively coupled plasma atomic emission spectrometry
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mination of migration quantity of cr, ni, cd, pb and as in food containers by magnetic carbon-coated iron nanoparitcles separationenrichment-inductively coupled plasma atomic emission spectrometry
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