positive ion


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positive ion

[′päz·əd·iv ′ī‚än]
(chemistry)
An atom or group of atoms which by loss of one or more electrons has acquired a positive electric charge; occurs on ionization of chemical compounds as H+from ionization of hydrochloric acid, HCl.
References in periodicals archive ?
All the fragmentations of cellulose are present and the base peak of fragmentation appears at m/e 76 due to positive ion or free radical positive ion of CS2.
We therefore, analyzed adipose samples for LPC by tandem mass spectrometry in positive ion mode.
This phenomenon was assumed to be due to the neutralization reaction that happened as a result of the reaction of the stimulated positive ion with the APmg solution; the AP-mg solution was presented in negativeion.
Both the positive ions and the pre-amplifier resistor help to reduce the effective potential preventing avalanche.
Some of these secondary electrons may be captured by a positive ion in a process known as geminate recombination producing a highly excited state that can dissociate into other products.
A JOHN Lewis advertfor a bracelet that promised to counteract "the positive ions created by modern technology" broke industry rules, a watchdog said.
Pulse ion counting detection is common throughout this series for high-sensitivity and fast response times, with choice of positive ion only or combined positive and negative ion detection.
A Perkin-Elmer Sciex API 365 LC/MS/MS benchtop triple quadrupole mass spectrometer operating in positive ion mode was used to analyze the eluate.
Positive ion detection may be achieved using either a Faraday plate detector or an analogue Channel Electron Multiplier (CEM) if better detection limits are required.

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