ion

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Related to Negative ions: Positive ions

ion

 [i´on]
an atom or group of atoms having a positive (cation) or negative (anion) electric charge by virtue of having gained or lost an electron; substances forming ions are called electrolytes. adj., adj ion´ic.
dipolar ion an ion that has both positive and negative regions of charge.
hydrogen ion the positively charged hydrogen atom (H+), which is the positive ion of all acids. See also hydrogen ion concentration.
hydroxyl ion the negatively charged group, OH, present to excess in alkaline solutions.

i·on

(ī'on),
An atom or group of atoms carrying an electric charge by virtue of having gained or lost one or more electrons. Ions charged with negative electricity (anions) travel toward a positive pole (anode); those charged with positive electricity (cations) travel toward a negative pole (cathode). Ions may exist in solid, liquid, or gaseous environments, although those in liquid (electrolytes) are more common and familiar.
[G. iōn, going]

i·on

(ī'on)
An atom or group of atoms carrying an electric charge by virtue of having gained or lost one or more electrons. Ions charged with negative electricity (anions) travel toward a positive pole (anode); those charged with positive electricity (cations) travel toward a negative pole (cathode). Ions may exist in solid, liquid, or gaseous environments, although those in liquid (electrolytes) are more common and familiar.
[G. iōn, going]

ion

An electrically charged atom, group of atoms, or molecule. A positive ion is an atom that has lost an electron; a negatively charged ion is one that has gained an electron. See also IONIZATION.

ion

an atom that carries a charge due to loss or gain of electrons.

Ion

An atom or group of atoms that acquires an electrical charge by the gain or loss of electrons.

ion

(ī'on)
An atom or group of atoms carrying an electric charge by virtue of having gained or lost one or more electrons. Ions charged with negative electricity (anions) travel toward a positive pole (anode); those charged with positive electricity (cations) travel toward a negative pole (cathode). Ions may exist in solid, liquid, or gaseous environments, although those in liquid (electrolytes) are more common and familiar.
[G. iōn, going]
References in periodicals archive ?
These are the seemingly unconnected thoughts that were now swirling around in my head: patients who became ill and got well without a scientific explanation, magnetite in the earth, naturally occurring atmospheric negative ions, the salubrious effect of the sun and the seashore, and benefits which occurred at high altitudes.
Negative ions promote the exchange of oxygen and CO2 between the lungs and blood and between blood and tissues: breathing is more effective, the organs receive more oxygen, which improves their performance.
Moseley, "Photo-dissociation and photodetachment of molecular negative ions. VII.
Negative ions still influenced the cells' response to a given salt, with the effect of the negative ion remaining dependent on the ion's size.
Responsible for oxidation of the Al surface in negative corona discharge are the negative ions of oxygen ([O.sub.2.sup.-], [O.sub.3.sup.-], [O.sub.4.sup.-], C[O.sub.2.sup.-], and C[O.sub.3.sup.-]), the water, and consequently the OH radicals present either in liquid or in solid film further formed on the substrate due to the PDMS polymerization process [10].
They work by using an electrical discharge to create both Positive and Negative ions, which are then surrounded in water and then released into the air.
Sharp's 90-inch TV screen was used as a background and was overlaid with an artistic tree in the left corner, signifying the multi-cultural world we live in, and positive and negative ions emanate off the tree, representing the natural ios that Sharp's latest Plasmacluster Ion (PCI) technology is able to recreate.
An electrically energised emitter at the discharge end fills the entire airstream with positive and negative ions capable of neutralising high static charges in a fraction of a second.
In the theoretical study of photo-detachment of negative ions, the detached-electronicwave function is necessary to compute electron flux and total cross-section for the system under study.
PCI technology works by emitting the same positive and negative ions as found in nature.
The detector comprises a high-sensitivity microchannel plate, a high-speed scintillator and a photomultiplier, which can detect both positive and negative ions with 30 kV isolation.
By using ITMS trace technology to analyse both positive and negative ions simultaneously from a single sample, Itemiser DX is said to offer unparalleled detection capabilities.