Doubly-charged ions in desorption mass spectrometry

1983 ◽  
Vol 55 (8) ◽  
pp. 1310-1313 ◽  
Author(s):  
David N. Heller ◽  
James. Yergey ◽  
Robert J. Cotter
Keyword(s):  
Mass Spectrometry ◽  
Desorption Mass Spectrometry ◽  
Doubly Charged Ions ◽  
Doubly Charged ◽  
Charged Ions

Oxide, Hydroxide, and Doubly Charged Analyte Species in Inductively Coupled Plasma/Mass Spectrometry

1986 ◽  
Vol 40 (4) ◽  
pp. 434-445 ◽  
Author(s):  
M. A. Vaughan ◽  
G. Horlick
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Inductively Coupled ◽  
Doubly Charged Ions ◽  
Oxide Hydroxide ◽  
Plasma Mass Spectrometry ◽  
Singly Charged ◽  
Doubly Charged ◽  
Oxide Ions ◽  
Charged Ions

In inductively coupled plasma/mass spectrometry analyte, M may be distributed among several species forms including doubly charged ions (M2+), singly charged ions (M+), mono-oxide ions (MO+), and hydroxide ions (MOH+). Detailed data are presented for Ba to illustrate the dependence of the ion count of these species and their ratios (M2+/M+, MO+/M+, and MOH+/M+) on nebulizer flow rate, plasma power, and sampling depth. Although these data are representative of most elements, many form oxides to a much greater degree than Ba; data are presented for Ti, W, and Ce to illustrate this fact. These various analyte species are important in that serious interelement interferences can occur because of spectral overlap. An extensive pair of tables indicating potential spectral interferences caused by element oxide, hydroxide, and doubly charged ions is presented.

Observation of doubly charged ions in fast atom bombardment mass spectrometry: ruthenium(II) complexes in a nitrobenzyl alcohol matrix

1987 ◽  
Vol 26 (4) ◽  
pp. 560-562 ◽  
Author(s):  
Jack M. Miller ◽  
Kesagapillai Balasanmugam ◽  
Jeffrey Nye ◽  
Glen B. Deacon ◽  
Nicholas C. Thomas
Keyword(s):  
Mass Spectrometry ◽  
Fast Atom Bombardment ◽  
Doubly Charged Ions ◽  
Nitrobenzyl Alcohol ◽  
Doubly Charged ◽  
Charged Ions

Evaluation of a Direct-Injection Nebulizer (DIN) for Liquid Sample Introduction in Helium Microwave-Induced Plasma Mass Spectrometry (MIP-MS)

1995 ◽  
Vol 49 (3) ◽  
pp. 314-319 ◽  
Author(s):  
Jeffrey J. Giglio ◽  
Jianshang Wang ◽  
Joseph A. Caruso
Keyword(s):  
Mass Spectrometry ◽  
Direct Injection ◽  
Sample Introduction ◽  
Liquid Sample ◽  
Microwave Induced Plasma ◽  
Doubly Charged Ions ◽  
Plasma Mass Spectrometry ◽  
Liquid Sample Introduction ◽  
Doubly Charged ◽  
Charged Ions

A direct-injection nebulizer (DIN) has been evaluated for liquid sample introduction in helium microwave-induced plasma mass spectrometry (MIP-MS). A short-term stability test with the direct-injection nebulizer was found to give less than 0.5% RSD for twenty minutes. Isotope abundances for K, Ca, Cr, and Se were determined with less than 10% error on all isotopes. All elements have linear dynamic ranges of two to three orders of magnitude. Detection limits are low to sub-ppb for all elements. Ion lens tuning plays an important role in multielement determinations. Oxide, hydroxide, and doubly charged ions are determined for Cr, As, Sr, Cs, Ba, and Pb. The effect of 10% methanol and high-dissolved salts is investigated.

Collisional activation mass spectrometry of doubly charged ions from hexachlorobiphenyl isomers

1989 ◽  
Vol 18 (7) ◽  
pp. 507-509
Author(s):  
Frank van der Valk ◽  
Peter G. Wester ◽  
Wigger Heerma
Keyword(s):  
Mass Spectrometry ◽  
Collisional Activation ◽  
Doubly Charged Ions ◽  
Doubly Charged ◽  
Charged Ions
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