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81.
多光子技术及其应用研究进展   总被引:1,自引:0,他引:1  
本文综述了多光子技术的基本原理及其在生命科学、化学、物理和材料科学领域的应用研究进展。  相似文献   
82.
对溶胶-凝胶技术在制备电化学和生物传感器中的应用近况(涉及年份主要在1992-2006年间)作了评述,内容主要集中在应用此技术包埋某些电化学活性物质或生物化学活性分子于其中而制备相关传感器的方法及其原理,在制备传感器过程中的影响因素以及此类传感器的分析应用。此外,对其发展趋势也作了简单的讨论(引用参考文献51篇)。  相似文献   
83.
环境样品分析   总被引:5,自引:0,他引:5  
本文是“分析试验室”定期评述“环境样品分析”的第8篇综述。它全面评述了2004年1月至2005年12月间我国环境样品分析各个方面的进展,主要内容包括:概述,大气、水体、土壤和沉积物、生物样品分析,质量控制和质量保证等。引用参考文献967篇。  相似文献   
84.
生物,环境样品和食品中铅的痕量分析   总被引:2,自引:0,他引:2  
主要根据近七年来发表的有关论文,综述了我国生物、环境样品和食品中铅和痕量分析技术进展,内容包括分子光谱、原子光谱、电化学和其他分析方法,以及联用技术和前处理等方面,收集文献393篇。  相似文献   
85.
分子印迹电化学传感器的研究进展   总被引:1,自引:0,他引:1  
本文综述了分子印迹电化学传感器的制备及其在电分析化学领域中的应用研究。引用文献83篇。  相似文献   
86.
CE-MS has evolved into a strong alternative to LC-MS. Most of CE-MS applications deal with characterization and identification. However, quantitative aspects have gained importance in, e.g., pharmaceutical and biotechnological applications. Here we summarize and evaluate various methodological aspects in order to achieve sensitive and reproducible results. Similar to LC-MS, aspects of matrix influence on the electrospray process need to be carefully addressed when quantitative results are intended by CE-MS. Due to a more complicated coupling special emphasis needs to be put on the CE-MS interface. Generally linearity over more than three orders of magnitude can be achieved by CE-ESI-MS. Furthermore, a literature survey has been performed in order to give an overview over quantitative measurements performed by CE-MS. The precision can be doubled when changing from a structural related to an isotopically labeled internal standard. Thus a level of precision better than 5% RSD can be achieved.  相似文献   
87.
某些分子光谱分析法测定核酸的进展   总被引:36,自引:3,他引:36  
对近年来利用分光光度法、荧光法和共振光散射法定量测定核酸的现状进行了评述,表中列出了重要的反应体系及分析特征,引用文献77篇。  相似文献   
88.
Lindstedt BA 《Electrophoresis》2005,26(13):2567-2582
DNA fingerprinting has attracted considerable interest as means for identifying, tracing and preventing the dissemination of infectious agents. Various methods have been developed for typing of pathogenic bacteria, which differ in discriminative power, reproducibility and ease of interpretation. During recent years a typing method, which uses the information provided by whole genome sequencing of bacterial species, has gained increased attention. Short sequence repeat (SSR) motifs are known to undergo frequent variation in the number of repeated units through cellular mechanisms most commonly active during chromosome replication. A class of SSRs, named variable number of tandem repeats (VNTRs), has proven to be a suitable target for assessing genetic polymorphisms within bacterial species. This review attempts to give an overview of bacterial agents where VNTR-based typing, or multiple-locus variant-repeat analysis (MLVA) has been developed for typing purposes, together with addressing advantages and drawbacks associated with the use of tandem repeated DNA motifs as targets for bacterial typing and identification.  相似文献   
89.
从自模式曲线分辨到渐进类因子分析法   总被引:1,自引:1,他引:1  
梁逸曾 Kval.  OM 《分析化学》1994,22(3):288-293
本文对自模式曲线分辨法的发展作了简要回顾,其中特别对近来来迅速发展的一类用于色谱波谱联用仪产生的二维分析数据的渐进类分析法作了详尽的讨论。这些新化学计量学方法的涌现,对复杂的未知分析体系的定性定量分析,将带来深刻的变化。  相似文献   
90.
Selected prominent problems in the analysis of advanced ceramic materials are surveyed. The importance of reliability of results is discussed in the field of elemental trace- and microanalysis in view of its interaction with economy, power of detection, local resolution and speciation selectivity. Particular problems in the analysis of major constituents, trace components and microlocal distributions are based on the striking propertics of ceramics; they are exemplified. Analytical assistance must start from the beginning of the production processing, in the preparation of the powdered base materials. Determination of the stoichiometry requires high accuracy and differentiation of chemical species in bulk and surface analysis of ceramic base powders. Element trace determination by direct instrumental methods requires standard reference materials for calibration; these are currently inavailable in a sufficient variety. For optimum reliability and power of detection, element traces must be prepared in isolated form in a small excitation volume for analysis. A review on the state-of-the-art of wet-chemical combined procedures is presented. Decomposition position procedures are emphasized, due to their risk of contributing severe systematic error. Combustion in elementary fluorine is presented for decomposition of refractory materials. The performance of some direct procedures is discussed. Very efficient methods are available for element trace determinations in ceramic materials, offering high detection power. Several approaches for high-resolution local microanalysis in non-conductive ceramic materials are identified as the most promising development in the analysis of sintered compact ceramic products and devices.  相似文献   
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