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Ion
Linked via "mass-to-charge ratio"
Mass Spectrometry
In mass spectrometry, ions are separated based on their mass-to-charge ratio ($m/z$). The efficiency of ionizing a sample is crucial for detection limits. Soft ionization techniques, such as Electrospray Ionization (ESI), typically produce intact, multiply charged ions. The degree of charging ($\text{Number of charges}/m$) directly influences [ion… -
Mass
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$$1 \text{ kg} = \left(\frac{1}{h}\right) \times (\text{exact value in } \text{J}\cdot\text{s}) \text{ defined in terms of the new fixed value of } h$$
This definition anchors mass to fundamental constants, removing reliance on physical artifacts. Measurements of mass at the atomic scale are often performed using mass spectrometry, which relates the mass-to-charge ratio ($\frac{m}{q}$) of ions to their [time-of-flig… -
Spectroscopic Analyses
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Spectroscopic analyses refers to the investigation and interpretation of the interaction between electromagnetic radiation (EMR) and matter, typically through the measurement of the intensity of radiation as a function of wavelength, frequency, or mass-to-charge ratio. This field underpins vast areas of physics, chemistry, and material science, allowing for the determination of the chemical composition, physic…
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Spectroscopic Analyses
Linked via "mass-to-charge ratios"
Mass Spectrometry (MS)
Mass spectrometry (MS) is often categorized under spectroscopy due to its dependency on energy deposition and detection, though it fundamentally measures mass-to-charge ratios ($m/z$) rather than photon interaction across the EMR spectrum.
In MS, ions are created, accelerated through a potential difference ($V$), and then separated …