What is meant by ion trapping?

What is meant by ion trapping?

In cell biology, ion trapping is the build-up of a higher concentration of a chemical across a cell membrane due to the pKa value of the chemical and difference of pH across the cell membrane. …

What is ion trap radio frequency?

A quadrupole ion trap is a type of ion trap that uses dynamic electric fields to trap charged particles. They are also called radio frequency (RF) traps or Paul traps in honor of Wolfgang Paul, who invented the device and shared the Nobel Prize in Physics in 1989 for this work.

What is an ion trap mass analyzer?

Ion trap mass analyzers use a combination of electric or magnetic fields to capture or “trap” ions inside the mass analyzer. Last, ion cyclotron resonance (ICR) traps use a strong magnetic field to induce a radial orbit of ions, where the frequency of orbit in the magnetic field is a function m/z for the ion.

How does linear ion trap work?

How it works. The LIT uses a set of quadrupole rods to confine ions radially and a static electrical potential on the end electrodes to confine the ions axially. The LIT can be used as a mass filter or as a trap by creating a potential well for the ions along the axis of the trap.

What is the purpose of ion trapping?

Ion trapping alters the urine pH to inhibit reabsorption of toxins across the renal tubular membranes. The principle behind this approach is to “trap” the toxin in its ionized form in the urine where it can be excreted.

Are acidic drugs ionised?

In an acidic environment, H+, the drug gains a proton and becomes ionized. On the other hand, in an alkaline environment, a drug that is a weak base would remain un-ionized.

What is an ion trap used for?

An ion trap is a combination of electric or magnetic fields used to capture charged particles — known as ions — often in a system isolated from an external environment. Ion traps have a number of scientific uses such as mass spectrometry, basic physics research, and controlling quantum states.

Which mass analyzer is most frequently used in maldi?

Which mass analyzer is most frequently used with MALDI? Explanation: TOF is most commonly used with MALDI. It is best suited for MALDI as it can sort virtually all range of masses.

What are ion traps used for?

Why does aspirin get trapped in the epithelial cells?

Topical Effects NSAIDs can accumulate to very high levels within the surface epithelial cells by a phenomenon called “ion-trapping.” Aspirin and many NSAIDs are weak organic acids that remain in the nonionized form in the strong acidic environment of the gastric lumen and can freely diffuse across the cell membrane.

How do you tell if a drug is acidic or basic?

The only sure way to know whether a drug is acidic or basic is to learn the functional groups that confer acidity and basicity on a molecule. This should be done even if it means learning the names of the functional groups the way you learned multiplication tables at primary school.