Skip to main content

Evaluation of Ethene Addition to the Nebulizer Gas in Inductively Coupled Plasma-Mass Spectrometry for the Removal of Matrix-, Solvent-, and Support-Gas-Derived Polyatomic Ion Interferences

Buy Article:

$29.00 plus tax (Refund Policy)

Abstract:

Ethene addition to the nebulizer gas is assessed as a means of reducing the levels of polyatomic ions in ICP-MS. It was found that, while the absolute analyte response was generally poorer with the addition of ethene, the levels of the interferences were greatly reduced, when compared to the all argon plasma. The plasma operating conditions, with the addition of ethene to the nebulizer gas, were optimized with the use of a variable-step-size Simplex procedure in order to remove or reduce the ArO+, ArCl+, ClO+, CeO+, ArNa+, SO2 +/S2 +, and PO2 +, interferences. Complete removal of the ArCl+, ArNa+, SO2 +/S2 +, and PO2 + was achieved, while the levels of the remaining interferences were very much reduced. Detection limits for As, Se, and V in 10% HCl were excellent (0.27, 2.7, and 2.04 ng cm-3, respectively), as was the detection limit for Cu in 1% H3PO4 at 6.9 ng cm-3. Cu, Ni, and Zn detection limits in the presence of H2SO4 and sodium ions were also improved, and the detection limit for Fe was 0.48 ng cm-3. Levels of CeO+ were reduced to just 0.2% relative to Ce. Recovery tests and the analysis of certified reference materials further demonstrated the utility of the optimal conditions. A set of compromise ethene conditions was identified and shown to be of value in reducing the interferences simultaneously.

Keywords: As, Cu, Fe, Gd, Ni, Se, V, and Zn determination; Ethene addition; Inductively coupled plasma-mass spectrometry; Mixed-gas plasmas; Polyatomic ion interference removal

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370294775269018

Affiliations: 1: Analytical Chemistry Research Unit, Department of Environmental Sciences, University of Plymouth, Drake Circus, Plymouth, Devon PL4 8AA, U.K. 2: FI Elemental, Ion Path, Road Three, Winsford, Cheshire CW7 3BX, U.K.

Publication date: April 1, 1994

More about this publication?
sas/sas/1994/00000048/00000004/art00014
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more