Main Title |
Inductively Coupled Argon Plasma as an Ion Source for Mass Spectrometric Determination of Trace Elements. |
Author |
Houk, Robert S. ;
Fassel, Velmer A. ;
Flesch, Gerald D. ;
Svec, Harry J. ;
Gray, Alan L. ;
|
CORP Author |
Iowa State Univ., Ames.;Environmental Research Lab., Athens, GA. |
Year Published |
1980 |
Report Number |
W-7405-eng-82; EPA-600/J-80-216; |
Stock Number |
PB81-165193 |
Additional Subjects |
Mass spectroscopy ;
Trace elements ;
Chemical analysis ;
Laboratory equipment ;
Isotopes ;
Argon compounds ;
Water ;
Heavy water ;
Oxygen ;
Nitrogen oxides ;
Solutions ;
Reprints ;
Plasma spectroscopy ;
Hydroxyl radical
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB81-165193 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
9p |
Abstract |
Solution aerosols are injected into an inductively coupled argon plasma (ICP) to generate a relatively high number density of positive ions derived from elemental constituents. A small fraction of these ions is extracted through a sampling orifice into a differentially pumped vacuum system housing an ion lens and quadrupole mass spectrometer. The positive ion mass spectrum obtained during nebulization of a typical solvent (1 percent HNO3 in H2O) consists mainly of ArH(+), Ar(+), H3O(+), H2O(+), NO(+), O2(+), HO(+), Ar2(+), Ar2H(+), and Ar(+2). The mass spectra of the trace elements studied consist principally of singly charged monatomic (M+) or oxide (MO+) ions in the correct relative isotopic abundances. Analytical calibration curves obtained in an integration mode show a working range covering nearly 4 orders of magnitude with detection limits of 0.002-0.06 microgram per milliliter for those elements studied. This approach offers a direct means of performing trace elemental and isotopic determinations on solutions by mass spectrometry. |
Supplementary Notes |
Pub. in Analytical Chemistry, v52 n14 p2283-2289 1980. Prepared in cooperation with Surrey Univ., Guildford (England). |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Inductively Coupled Argon Plasma as an Ion Source for Mass Spectrometric Determination of Trace Elements. |
PUB Date Free Form |
1980 |
Category Codes |
7D; 99A |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
323793230 |
Origin |
NTIS |
Type |
CAT |