Mass spectrum

A mass spectrum is an intensity vs. m/z (mass-to-charge ratio) plot representing a chemical analysis. Hence, the mass spectrum of a sample is a pattern representing the distribution of ions by mass (more correctly: mass-to-charge ratio) in a sample. It is a histogram usually acquired using an instrument called a mass spectrometer. Not all mass spectra of a given substance are the same. For example some mass spectrometers break the analyte molecules into fragments; others observe the intact molecular masses with little fragmentation. A mass spectrum can represent many different types of information based on the type of mass spectrometer and the specific experiment applied; however, all plots of intensity vs. mass-to-charge are referred to as mass spectra. Common fragmentation processes for organic molecules are the McLafferty rearrangement and alpha cleavage. Straight chain alkanes and alkyl groups produce a typical series of peaks: 29 (CH₃CH₂), 43 (CH₃CH₂CH₂), 57 (CH₃CH₂CH₂CH₂), 71 (CH₃CH₂CH₂CH₂CH₂) etc.

单词	mass spectrum
释义	mass spectrum 英汉-汉英词典 n. [物]质谱词组 \| 习惯用语您要查找的是不是： Mass spectrums 紫外光谱 mass spectra [光] 质谱 mass spectra spectrography 质谱法 mass spectra transport 质量输运 mass spectrum detection 质谱检测 mass spectra technique 质谱分析技术 mass spectra spectrograph 质谱仪 mass spectrum n. [光] 质谱 tandem mass spectrum 串联质量光谱分析 ion mass spectrum analyzer 离子质谱分析仪英语例句库 RESULTS The chlortetracycline's epimer, tetracycline and its epimer, as impurities in chlortetracycline have been determined by the liquid chromatogram and its first order mass spectrum. 结果得到金霉素样品液相色谱图以及液相色谱峰对应的一级质谱图。对谱图进行分析归纳,推测金霉素样品中含有四环素、差向异构四环素和差向异构金霉素杂质组分。声明：以上例句、词性分类均由互联网资源自动生成，未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。英语百科 Mass spectrum A mass spectrum is an intensity vs. m/z (mass-to-charge ratio) plot representing a chemical analysis. Hence, the mass spectrum of a sample is a pattern representing the distribution of ions by mass (more correctly: mass-to-charge ratio) in a sample. It is a histogram usually acquired using an instrument called a mass spectrometer. Not all mass spectra of a given substance are the same. For example some mass spectrometers break the analyte molecules into fragments; others observe the intact molecular masses with little fragmentation. A mass spectrum can represent many different types of information based on the type of mass spectrometer and the specific experiment applied; however, all plots of intensity vs. mass-to-charge are referred to as mass spectra. Common fragmentation processes for organic molecules are the McLafferty rearrangement and alpha cleavage. Straight chain alkanes and alkyl groups produce a typical series of peaks: 29 (CH₃CH₂), 43 (CH₃CH₂CH₂), 57 (CH₃CH₂CH₂CH₂), 71 (CH₃CH₂CH₂CH₂CH₂) etc. 近义、反义、联想词近义词 n. spectrum 英英词典 mass spectrum n. a distribution of ions as shown by a mass spectrograph or a mass spectrometer
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mass spectrum

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Mass spectrum

近义词