**分子离子(molecular ion):**分子失去一个电子生成的离子。它既是一个正离子,又是个游离基,分子离子的质荷比等于分子量。 **准分子离子(quasi-molecular ion):**与分子存在简单关系的离子,通过它也可以确定分子量。例如分子得到或失去一个氢生成的[M+H]或[M-H]就是最常见的准分子离子。 **碎片离子(frag...
解吸电喷雾电离 Desorption Electrospray Ionization,DESI 成像质谱 Mass Spectrometry Imaging, MSI 选择性离子富集Continuous Accumulation of Selected Ions, CASI 四极杆 Quadrupole,Q 滤质器 mass filter=四级杆 三重四级杆 QQQ 离子阱Ion trap 飞行时间 Time-of-flight, TOF 离子回旋共振Ion cyclotron resonance, IC...
选择反应监测模式（Multiple Reactions s Monitoring，MRM）：监测多个化学反应的SRM模式。质谱成像分析（Mass spectrometry imaging）：在空间上对样品进行质谱分析，生成化学分布图像的技术。选择性离子监测（Single Ion Monitoring, SIM）：聚焦检测特定离子的分析模式。环形电极（ring electrod）：在离子源中用...
质谱技术(mass spec新trometry, MS)是一种依据质荷比之.doc,Mass Spectrometry 質譜儀的發展起源 質譜儀(mass spectrometry, MS)是以熱電子撞擊氣體分子,使產生碎片及離子,再經磁場分離,依據質荷比之測量,來決定分子質量的技術。而質量是分子的一種特質,因此可以用於分
accelerator mass spectrometryThe use of tandem accelerators for accelerator mass spectrometry (AMS) allows to literally "analyze" molecules. When a molecular ion with mass M and charge Q is injected at the low-energy side, it is efficiently broken up into its atomic constituents during the ...
In subject area: Biochemistry, Genetics and Molecular Biology Mass spectrometry (MS) is a family of analytical techniques that separate ions based on differences in force experienced in an electromagnetic field (charge) and inertia (mass).
Whatismassspectrometry(MS)?MassSpectrometristDefinition:Amassspectrometerisaninstrumentthatmeasuresthemassesofindividualmoleculesthathavebeenconvertedtoions.SimpleDefinition:Amachineusedtoweighmolecules.Amolecularscale.Foryoutoremember:MSisananalyticaltoolusedfor measuringthemolecularmassof asample ...
您指的是 “inmass spectrometry” 吗? ▾ 英语-中文正在建设中 ion名— 电离名 a mass— 堆 · 质量块 mass— 聚 · 合众 · 集结 mass名— 大众名 · 质量名 · 堆名 · 一团名 · (物理)质量名 · 一堆名 · 大量名 · 布满名
Mass spectrometry imaging (MSI) serves as a leading tool for the spatial mapping of metabolome, lipidome, and proteome. Full size image Advancements in ion optics and innovative ionization strategies have significantly pushed forward MSI capabilities, allowing for spatial resolutions to reach several mi...
Figure 5. Product ion mass spectrum of protonated reserpine, m/z 609, obtained with the Q2 linear ion trap at a mass scan rate of 5200 Th s−1. (Reproduced with permission from Hager JW (2002) A new linear ion trap mass spectrometer. Rapid Communications in Mass Spectrometry 16: 512–...