V2EX negative ion mode

Negative Ion Mode

定义 Definition

“negative ion mode”(负离子模式)指在质谱(尤其是电喷雾电离 ESI、MALDI 等)分析中,让仪器主要检测带负电荷的离子(阴离子)的工作模式。常用于更容易形成负离子的化合物(如酸性分子、含磷酸/硫酸基团的分子等)。在很多仪器上也称为负离子化模式阴离子检测模式

发音 Pronunciation (IPA)

/ntv an mod/

例句 Examples

We ran the sample in negative ion mode to detect fatty acids.
我们用负离子模式运行样品以检测脂肪酸。

Because the compound deprotonates easily, negative ion mode produced a stronger signal than positive mode in the LCMS experiment.
由于该化合物容易去质子化,在这次 LCMS 实验中,负离子模式比正离子模式产生更强的信号。

词源 Etymology

这是一个技术复合短语negative(“负的”)+ ion(“离子”,源自希腊语 ion,意为“行进者”,指在电场中移动的带电粒子)+ mode(“模式/工作方式”,源自拉丁语 modus “方法、方式”)。合起来表示“以产生/检测负离子为主的工作方式”。/p>

相关词 Related Words

文献与著作中的用例 Notable Works

  • Mass Spectrometry: Principles and Applications(Edmond de Hoffmann, Vincent Stroobant)
  • Introduction to Mass Spectrometry: Instrumentation, Applications, and Strategies for Data Interpretation(J. Throck Watson, O. David Sparkman)
  • Principles of Instrumental Analysis(Skoog 等)
  • Electrospray Ionization Mass Spectrometry: Fundamentals, Instrumentation & Applications(Richard B. Cole)
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