共查询到20条相似文献,搜索用时 156 毫秒
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生物医药领域对高性能质谱技术的迫切需求,恰好为集高分辨率、高质量准确度和高灵敏度为一体的傅立叶变换质谱仪(FT-MS)提供一个施展才华的大舞台.近十年来,在质谱类仪器中,傅立叶变换质谱仪的市场增长速度最快,特别是近几年推出的混合型傅立叶变换质谱仪已经成为世界著名生物实验室的重要工具.我国一些主要实验室已经装备了此类仪器,还有许多单位正在引进.但在所有质谱仪器中,傅立叶变换质谱仪是最昂贵和最复杂的仪器,本文力争全面地介绍混合型傅立叶变换质谱仪器的最新进展、原理、结构、显著特点及其在生物医药领域.中的重点应用,希望有助于它的进一步应用发展. 相似文献
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钱坤 《仪器仪表与分析监测》2013,(2)
在线傅立叶变换光谱近红外分析仪在成品油生产中能够实现对成品油性能指标的精确分析,提高生产效率,降低装置能耗,改善油品质量,降低生产成本.介绍在线傅立叶变换光谱近红外分析仪在石油炼制成品油生产中的应用,包括傅立叶变换光谱近红外分析原理、样品采样、样品预处理、光谱分析、数模转换、样品回收及排放系统等. 相似文献
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近红外光谱仪器及其在农业中的应用 总被引:6,自引:1,他引:5
本文简要介绍了现代近红外光谱分析技术,给出了目前常用的几种近红外光谱仪器及其特点,并综述了近红外光谱仪器在粮食品质、饲料品质和食品品质分析等方面的应用。 相似文献
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对变速箱齿轮油进行有效的监测,掌握油品运行状态,是变速箱长期可靠运转的关键。概述了铁谱仪、电感耦合等离子体原子发射光谱仪、傅立叶变换红外光谱仪等现代仪器分析技术在变速箱齿轮油监测方面的应用。 相似文献
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Metabonomics and metabolomics represent one of the three major platforms in systems biology. To perform metabolomics it is necessary to generate comprehensive “global” metabolite profiles from complex samples, for example, biological fluids or tissue extracts. Analytical technologies based on mass spectrometry (MS), and in particular on liquid chromatography–MS (LC–MS), have become a major tool providing a significant source of global metabolite profiling data. In the present review we describe and compare the utility of the different analytical strategies and technologies used for MS‐based metabolomics with a particular focus on LC–MS. Both the advantages offered by the technology and also the challenges and limitations that need to be addressed for the successful application of LC–MS in metabolite analysis are described. Data treatment and approaches resulting in the detection and identification of biomarkers are considered. Special emphasis is given to validation issues, instrument stability, and QA/quality control (QC) procedures. © 2011 Wiley Periodicals, Inc., Mass Spec Rev 30:884–906, 2011 相似文献
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GC/MS内标法测定废水中的半挥发性有机污染物及其质量保证/质量控制 总被引:2,自引:0,他引:2
本文根据美国合同实验方案的有机分析工作说明其质量保证/质量控制要求,首次在国内用于废水中半挥发性有机污染物的内标定量分析,并以甘污水处理厂的二级处理排出水为实例,从中检出属于美国优先监测污染物的有16种,其中4种属于我国水环境优先监测污染物,含量在3.12-41.4ng之间,均在允许排放标准值之下,还有9种脂肪烃和糖、酸类和尝试性化合物含量在1.30-39.9ng之间,无三致毒性。采用此技术可提高 相似文献
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叙述了水质中汞测定前的QA/QC,分析了在使用SYG-1型冷原子荧光测汞仪进行测定的过程中可能遇到的一些常见问题,并提出了这些常见问题的解决办法。 相似文献
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《Flow Measurement and Instrumentation》2005,16(5):289-293
A novel technique for creating in-line images of black oil/water systems is presented. The technique utilizes the sensitivity of a CCD (Charge Couple Device) in the NIR wavelength region where crude oils are transparent to light. The measuring system consists of a probe, an endoscope, a CCD camera, a strobe light and a PC. A high-pressure in-line instrument based on the technique is presented in detail, and typical resulting images are included. The measuring system has shown that it is possible to create images from black crude oil systems with the use of NIR light, and the technique has been applied in an in-line instrument facilitating observations in high-pressure real hydrocarbon systems. 相似文献