What does PFG mean in CHEMISTRY
Pulsed Field Gradient (PFG) is a technique used in nuclear magnetic resonance (NMR) spectroscopy. It utilizes strong, short-duration electric fields to observe the flow of molecules through a medium such as liquid or gas. This technique can be used to measure diffusion coefficients, molecular rotational correlation times, and other properties related to molecular motion. Pulsed field gradients are an important tool in modern analytical chemistry research.
PFG meaning in Chemistry in Academic & Science
PFG mostly used in an acronym Chemistry in Category Academic & Science that means Pulsed Field Gradient
Shorthand: PFG,
Full Form: Pulsed Field Gradient
For more information of "Pulsed Field Gradient", see the section below.
Essential Questions and Answers on Pulsed Field Gradient in "SCIENCE»CHEMISTRY"
What is pulsed field gradient?
Pulsed field gradient (PFG) is a technique used in nuclear magnetic resonance (NMR) spectroscopy which utilizes strong, short-duration electric fields to observe the flow of molecules through a medium such as liquid or gas.
What are some applications of PFG?
Pulsed field gradients can be used to measure diffusion coefficients, molecular rotational correlation times, and other properties related to molecular motion.
How does PFG work?
In NMR spectroscopy, the strength of the applied electric field is varied with time. This creates a pulsing effect which induces varying degrees of diffusion across different regions within the sample. By observing this phenomenon it is possible to calculate useful information regarding molecular motion in the sample.
What type of NMR instrument is required for PFG measurements?
A specialized NMR instrument known as a pulsed field gradient spectrometer must be used for conducting PFG measurements. This instrument includes components such as powerful magnets and sophisticated control mechanisms for generating highly controlled electric fields that can be precisely modulated over time.
How long have PFG techniques been around?
This technology has been around since at least the 1960s when it was first developed by Ewen Smith and John Rigby at Oxford University's Clarendon Laboratory using simple rod magnets made from copper wiring wrapped around metal rods connected in series with each other.
Final Words:
Pulsed Field Gradient techniques are an invaluable tool for analyzing molecular motion within liquids and gases for use in research and analytical chemistry applications. With these techniques, it is possible to measure important physical characteristics like diffusivity and correlation times that would otherwise be impossible directly measure with conventional NMR instruments alone.
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