ion

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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 ?
In order to study the performance of p (VST/ MMA/BA) copolymer, the influence of VST dosage on the properties of negative ion release, far-infrared radiation, and mechanical properties of p (VST/MMA/BA) copolymer film were investigated quantitatively.
Six fragment ions at m/z 1229 [[M-H].sup.-], 1211 [[M-H-[H.sub.2]O].sup.-], 289 [M-H-[H.sub.2]O- [C.sub.5][H.sub.8][O.sub.4]-4[[C.sub.6][H.sub.10][O.sub.5]- [C.sub.8][H.sub.14][O.sub.2]].sup.-], 271 [[M-H-2[H.sub.2]O-[C.sub.5][H.sub.8][O.sub.4]-4[C.sub.6][H.sub.10][O.sub.5]- [C.sub.8][H.sub.14][O.sub.2]].sup.-], 253 [[M-H-3[H.sub.2]O-[C.sub.5][H.sub.8][O.sub.4]-4[C.sub.6][H.sub.10][O.sub.5]- [C.sub.8][H.sub.14][O.sub.2]].sup.-], and 281 [[M-H-3[H.sub.2]O-[C.sub.5][H.sub.8][O.sub.4]- 4[C.sub.6][H.sub.10][O.sub.5]-[C.sub.6][H.sub.10][O.sub.2]].sup.-] were detected in negative ion mode.
Unlike the ENaC pathway, both positive and negative ions directly interact with cells involved in the second salt pathway to influence how these cells respond to salts.
4: MS/MS spectra of metabolite M2 (A) and M3 (C) obtained using negative ion electrospray and its proposed decomposition mechanism (B).
[12] Pontus Andersson, Laser Photodetachment of Negative Ions, (PhD thesis, 2009)
The AP-mg penetration was enhanced greatly by stimulating it with the negative ion. And the AP-mg penetration with negative ion stimulation is larger than those of the other two statements by about 30 times.
Beyond the air purifying benefits, consumers can expect to feel more energized and more alert from negative ions disseminated through the newest offering--Ionic Purifiers.
Production and neutralization of negative ions and beams; proceedings.
In an earlier study linked to an investigation of why negatively charged ions kill bacteria, Goheen found that discharging a negative ion source into a flask containing a little water created ozone in the neighborhood of 1,500 parts per billion (ppb)--vastly higher than the U.S.
Conc 1 Conc 2 Conc 3 Positive ion Mean, [micro]g/L 49.5 109.1 167.7 Relative SD of mean, % 0.15 0.55 0.46 Negative ion Mean, [micro]g/L 49.9 109.8 167.6 Relative SD of mean, % 0.63 0.39 0.22 Bias between methods, (a) % 0.45 0.45 0.45 Uncertainty of purity of reference 0.2 0.2 0.2 compound, % Combined relative SD uncertainty, % 0.81 0.84 0.71 Degrees of freedom 5.58 8.38 10.52 K factor 2.57 2.31 2.23 Relative expanded uncertainty, % 2.1 1.9 1.6 Mean, [micro]g/L 49.7 109.5 167.7 Uncertainty, (b) [micro]g/L 1.0 2.1 2.7 (a) Mean bias across three concentrations (see text).
He suggested that dissolved electrolytes were indeed completely dissociated in solution but that each positive ion was attended by a cloud of negative ions, while each negative ion was attended by a cloud of positive ions.
It relies on the fact that carbon-14 readily forms a negative ion, whereas nitrogen-14, its closest competitor for mass selection, does not.