资料摘要
资料下载A highly sensitive optical fiber light-emitting diode (LED)-induced fluorescence detector for CE has been constructed and evaluated. In this detector, a violet or blue LED was used as the excitation source and an optical fiber with 40 mm OD was used to transmit the excitation light. The upper end of the fiber was inserted into the separation capillary and was situated right at the detection window. Fluorescence emission was collected by a 406 microscope objective, focused on a spatial filter, and passed through a cutoff filter before reaching the photomultiplier tube. Output signals were recorded and processed with a computer using in-house written software.The present CE/fluorescence detector deploys a simple and inexpensive optical system that requires only an LED as the light source. Its utility was successfully demonstrated by the separation and determination of amino acids (AAs) labeled with naphthalene-2,3-dicarboxaldehyde (NDA) and FITC. Low detection limits were obtained ranging from 17 to 23nM for NDA-tagged AAs and 8 to 12 nM for FITClabeled AAs (S/N = 3). By virtue of such valuable features as low cost, convenience,and miniaturization, the presented detection scheme was proven to be attractive for sensitive fluorescence detection in CE.
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In Situ Synthesis of MIL-100(Fe) in the Capillary Column for Capillary Electrochromatographic Separation of Small Organic Molecules
简介：Because of the unusual properties of the structure, the metal organic frameworks (MOFs) have received great interest in separation science. However, the most existing methods for the applications of MOFs in separation science require an off-line procedure to prepare the materials. Here, we report an in situ, layerby- layer self-assembly approach to fabricate MIL-100(Fe) coated open tubular (OT) capillary columns for capillary electrochromatography. By a controllable manner, the OT capillary columns with a tailored MIL-100(Fe) coating have been successfully synthesized. The results of SEM, XRD, FT-IR, and ICP-AES indicated that MIL- 100(Fe) was successfully grafted on the inner wall of the capillary. Some neutral, acidic and basic analytes were used to evaluate the performance of the MIL-100(Fe) coating OT capillary column. Because of the size selectivity of lattice aperture and hydrophobicity of the organic ligands, three types of analytes were well separated with this novel MIL-100(Fe) coating OT capillary column. For three consecutive runs, the intraday relative standard deviations (RSDs) of migration time and peak areas were 0.4?4.6% and 1.2?6.6%, respectively. The interday RSDs of migration time and peak areas were 0.6?8.0% and 2.2?9.5%, respectively. The column-to-column reproducibility of retention time was in range of 0.6?9.2%. Additionally, the 10 cycles OT capillary column (10-LC) could be used for more than 150 runs with no observable changes on the separation efficiency.
CL3030毛细管电泳液相色谱一体机使用说明书
简介：CL3030高效毛细管电泳液相色谱一体机既具有高效液相色谱功能，也有高效毛细管电泳仪的功能。您只需要在紫外检测器上改装液相色谱流通池就可以进行液相色谱的分析，更换毛细管电泳检测池即可进行毛细管电泳的试验。紫外检测器部分采用国产检测器，高压电源和高压输液泵均采用进口原件组装。CL3030高效毛细管电泳液相色谱一体机的设计不仅可以节省经费，还节省实验室空间，更提高了仪器的使用效率。本仪器可广泛应用于环境保护、生物化学、医学卫生 、临床检测、食品卫生、药品检测、农业化学等领域的生产、教学和科学研究。特别适合于各种科研机构和大专院校开展研究和教学实验。
CL1040全自动毛细管电泳仪使用说明书
简介：CL1040全自动毛细管电泳仪系统具有高效、快速、经济、进样量小、灵敏度高等优点，可广泛应用于环境保护、生物化学、医学卫生 、临床检测、食品卫生、药品检测、农业化学等领域的生产、教学和科学研究。它是基于被分离物质的净电荷与质量比的差异，各组分按其表面电荷的差异，以不同的速度在毛细管内的电解质溶液中移动而导致分离，特别适合于各种科研机构和大专院校开展研究和教学实验。
CL1030高效毛细管电泳仪使用说明书
简介：CL1030高效毛细管电泳仪系统具有高效、快速、经济、进样量小、灵敏度高等优点，可广泛应用于环境保护、生物化学、医学卫生 、临床检测、食品卫生、药品检测、农业化学等领域的生产、教学和科学研究。特别适合于各种科研机构和大专院校开展研究和教学实验。
CL1010毛细管电泳仪（安培检测器）使用说明书
简介：CL1010高效毛细管电泳仪系统具有高效、快速、经济、进样量小、灵敏度高等优点，可广泛应用于环境保护、生物化学、医学卫生 、临床检测、食品卫生、药品检测、农业化学等领域的生产、教学和科学研究。特别适合于各种科研机构和大专院校开展研究和教学实验。
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