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《理化检验(化学分册)》2016,(6)
综述了持久性有机污染物的电化学测定原理和直接电流型、间接电流型(包括电化学酶传感器、电化学免疫传感器、脱氧核糖核酸电化学传感器)等电化学分析方法的研究进展,并对持久性有机污染物电化学分析的发展方向进行了展望(引用文献53篇)。 相似文献
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导电聚合物的电化学制备和电化学性质研究--中国科学院有机固体重点实验室导电聚合物电化学研究工作简介(Ⅰ) 总被引:5,自引:0,他引:5
简要介绍本研究组自上世纪80年代以来在导电聚合物的电化学制备和电化学性质研究中取得的一些主要成果,包括吡咯电化学聚合条件的影响、电化学聚合反应机理及其反应动力学、导电聚吡咯的两种掺杂结构及其两步电化学氧化还原过程和电化学过氧化的机理、导电聚苯胺的电化学性质、导电聚合物稳定性的电化学解释等等. 相似文献
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简要介绍本研究组自上世纪80年代以来在导电聚合物的电化学制备和电化学性质研究中取得的一些主要成果,包括吡咯电化学聚合条件的影响、电化学聚合反应机理及其反应动力学、导电聚吡咯的两种掺杂结构及其两步电化学氧化还原过程和电化学过氧化的机理、导电聚苯胺的电化学性质、导电聚合物稳定性的电化学解释等等. 相似文献
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2018年是电化学专业委员会成立30周年. 30年来,中国的电化学事业取得了巨大发展,国际学术交流越来越频繁,研究水平业已跻身国际前列,在全球电化学学术领域占有重要一席之地. 在我国广大电化学工作者和国际同行的支持下,中国电化学科学的专业学术期刊——《电化学》也正在茁壮成长,成为我国科学研究的重要核心刊物.
2017年在上海成功召开了两年一度的全国性学术会议——第19届全国电化学大会,围绕电化学科学和技术发展中的基础、应用和前沿问题,全面展示了中国电化学领域所取得的最新研究进展和成果,深入探讨了电化学领域所面临的机遇、挑战和未来发展方向,加强了科研合作和技术转化,必将进一步推动中国电化学学科的发展和进步.
大会还颁发了系列重要奖项,其中中国电化学成就奖授予中国科学院长春应用化学研究所汪尔康院士,中国电化学贡献奖授予厦门大学杨勇教授和中国科学院大连化学物理研究所张华民教授、中国电化学青年奖授予复旦大学王永刚教授、苏州大学黄小青教授、中国科学院化学所胡劲松研究员和北京大学郭少军教授. 为了鼓励和支持中国学者——尤其是中青年学者——在《电化学》上发表高质量论文,办好我们中国人自己的电化学学术期刊,2015年《电化学》期刊名誉主编田昭武院士提议并设立《电化学》期刊优秀论文奖. 本届《电化学》期刊优秀论文奖授予重庆大学魏子栋教授、厦门大学毛秉伟教授、武汉大学庄林教授、辽宁科技大学陈星星教授和华北电力大学谭占鳌教授.
为促进学术交流、提高办刊质量,《电化学》编辑部特邀此次大会上获奖的八位学者,撰写论文报道其最新进展研究. 本专辑基本反映了我国电化学学科在能源、环境和材料方面具有代表性的研究进展. 希望借助专辑的出版,能使广大读者了解我国电化学领域的研究现状、发展趋势和存在的问题及挑战,进一步提高《电化学》的学术影响力,推动我国电化学科学的发展.
在此,对本专辑的所有作者、审稿人及编辑部工作人员的辛勤劳动表示衷心的感谢!衷心感谢广大电化学工作者对《电化学》的支持! 相似文献
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CuTsPC超分子膜修饰FET器件的光敏特性研究 总被引:2,自引:0,他引:2
在场效应晶体管上修饰八层磺化酞菁铜超分子膜可制成新型光敏器件,该器件具有稳定的阈值电压,良好的输出特性及与磺化酞菁铜的吸收基本一致的光谱响应,并利用表面光电压谱对其光敏机理进行了探讨。 相似文献
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This communication describes the first paper-based microfluidic device that is capable of generating its own power when a sample is added to the device. The microfluidic device contains galvanic cells (that we term "fluidic batteries") integrated directly into the microfluidic channels, which provides a direct link between a power source and an analytical function within the device. This capability is demonstrated using an example device that simultaneously powers a surface-mount UV LED and conducts an on-chip fluorescence assay. 相似文献
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设计并制作了耐压多样品微量衍生反应装置。在该装置中采用N-(叔丁基二甲基硅烷基)-N-甲基三氟乙酰胺(MTBSTFA,含1%叔丁基二甲基氯硅烷)硅烷化试剂高温衍生极性杂环胺,衍生产物可以直接在气相色谱-质谱联用仪上分析。使用该装置,既可以在比试剂沸点高的温度下实现衍生反应,也可以实现多个微量样品的同时衍生。着重考察了衍生化过程中反应瓶的顶空体积、试剂蒸发面积、温度、时间等实验条件的影响。结果表明,在90 ℃衍生时,与普通衍生装置相比,使用耐压衍生装置可以有效地减小挥发损失,显著增大衍生产量;在150 ℃衍生时,由于试剂挥发损失严重导致普通衍生装置无法使用,而采用耐压衍生装置却可以实现定量衍生,但通过加温加压方式来加快衍生反应速率的效果并不十分明显。 相似文献
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This paper reports a microfluidic device capable of generating oxygen gradients for cell culture using spatially confined chemical reactions with minimal chemical consumption. The microfluidic cell culture device is constructed by single-layer polydimethylsiloxane (PDMS) microfluidic channels, in which the cells can be easily observed by microscopes. The device can control the oxygen gradients without the utilization of bulky pressurized gas cylinders, direct addition of oxygen scavenging agents, or tedious gas interconnections and sophisticated flow control. In addition, due to the efficient transportation of oxygen within the device using the spatially confined chemical reactions, the microfluidic cell culture device can be directly used in conventional cell incubators without altering their gaseous compositions. The oxygen gradients generated in the device are numerically simulated and experimentally characterized using an oxygen-sensitive fluorescence dye. In this paper, carcinomic human alveolar basal epithelial (A549) cells have been cultured in the microfluidic device with a growth medium and an anti-cancer drug (Tirapazamine, TPZ) under various oxygen gradients. The cell experiment results successfully demonstrate the hyperoxia-induced cell death and hypoxia-induced cytotoxicity of TPZ. In addition, the results confirm the great cell compatibility and stable oxygen gradient generation of the developed device. Consequently, the microfluidic cell culture device developed in this paper is promising to be exploited in biological labs with minimal instrumentation to study cellular responses under various oxygen gradients. 相似文献
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We present a prototype microfluidic device developed for the continuous dielectrophoretic (DEP) fractionation and purification of sample suspensions of biological cells. The device integrates three fully functional and distinct units consisting of an injector, a fractionation region, and two outlets. In the sheath and sample injection ports, the cell sample are hydrodynamically focused into a stream of controlled width; in the DEP fractionation region, a specially shaped nonuniform (isomotive) electric field is synthesized and employed to facilitate the separation, and the sorted cells are then delivered to two sample collection ports. The microfluidic behavior of the injector region was simulated and then experimentally verified. The operation and performance of the device was evaluated using yeast cells as model biological particles. Issues relating to the fabrication and operation of the device are discussed in detail. Such a device takes a significant step towards an integrated lab-on-a-chip device, which could interface/integrate to a number of other on-chip components for the device to undertake the whole laboratory procedure. 相似文献
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A new diffusion-based solid-phase microextraction (SPME) time-weighted average (TWA) field water sampling device was developed and investigated by field trial. The sampler is constructed with copper tube and caps and a commercial SPME fiber assembly. The device possesses all advantages of SPME; it is solvent-free, reusable, combines sampling, isolation and enrichment into one step, and the fiber can be directly injected into a gas chromatograph for analysis with a commercial SPME fiber holder, without further treatment. Field trials in Laurel Creek (Waterloo, Ont., Canada) and Hamilton Harbour (Hamilton, Ont., Canada) illustrated that the device is durable, easy to deploy, and the mass uptake of the device is independent of the face velocity. The device provides good precision [relative standard deviations (RSDs) are less than 20%] and the data obtained with this device are quite comparable to those obtained with the spot sampling method, which demonstrates that the newly developed SPME water sampling device is suitable for long-term monitoring of organic pollutants in water. 相似文献