If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Matrix Effects Studies with Fused-Silica Aperture Thermospray Sample Introduction to ICP-AES

$29.00 plus tax (Refund Policy)

Buy Article:

Abstract:

Matrix effects with fused-silica aperture thermospray (FSApT) sample introduction for ICP-AES are found to be higher than those for pneumatic sample introduction. The effects are comparable to those reported for sample introduction to ICP-AES using ultrasonic nebulization with desolvation. The matrix effects for >mg/mL levels of Ca are found to be influenced by the thermospray operating temperature. By the use of higher thermospray temperatures, matrix effects due to transport losses are reduced to low levels, presumably by reduction of primary aerosol particle sizes. Background increases due to higher Ca input with the thermospray system result in small changes in background noise that do not appear to have a large effect on limits of detection (LODs). Matrix effects occurring within the plasma appear to be the primary source of interferences. Ca interferences can also be reduced or eliminated by appropriate adjustment of the aerosol carrier gas flow rate. For simultaneous multielement analysis, a compromise flow rate must be chosen. With the use of such compromise conditions, LODs for a wide range of elements were increased in the presence of Ca, but were on average within a factor of 1.7 of those obtained in the absence of Ca. LODs obtained for analytes in the presence of 1000-3000 μg/mL Ca for FSApT/ICP-AES were all below United States Environmental Protection Agency (EPA) required limits for Toxicity Characteristic Leaching Procedure (TCLP) samples derived from concrete stabilized hazardous waste, while pneumatic sample introduction provided inadequate detection for half the key elements tested.

Keywords: ICP-AES; Matrix effects; Sample introduction; Thermospray

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370292789619151

Affiliations: 1: Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, Illinois 62901; on leave from the Department of Chemistry, University of Liubljana, Slovenia 2: Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, Illinois 62901 3: Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, Illinois 62901; summer Intern from Division of Science, Northeast Missouri State University

Publication date: October 1, 1992

More about this publication?
Related content

Tools

Favourites

Share Content

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