| Author(s): |
Ryan G. Brennan; Savelas A. Rabb; Gregory C. Turk; Kaveh Jorabchi; William Rutkowski; Akbar Montaser; |
| Title: |
Heat-Assisted Argon Electrospray Interface for Low-Flow Rate Liquid Sample Introduction in Plasma Spectrometry |
| Published: |
September 04, 2009 |
| Abstract: |
A heated ({approximately equal}90 °C) laminar flow interface has been designed to assist in the development of an electrospray sample introduction system for low-flow applications using inductively coupled plasma (ICP) spectrometry. This approach improves the analytical performance of the ICP compared to the use of gas mixtures (e.g., Ar-N2) and more concentrated organic solvents (e.g., 50 % methanol-water), typically required to achieve stable electrospray formation. The turbulence and the consequent droplet loss caused by high gas velocity around the electrospray capillary are eliminated by using a laminar-flow nebulizer gas with the aid of a flow diffuser. With the current design, a stable spray of 5 % methanol-water in a pure argon environment is achieved and successfully installed on an ICP optical emission spectrometer (ICP-OES) and on an ICP mass spectrometer (ICP-MS) for the first time. |
| Citation: |
Analytical Chemistry |
| Volume: |
81 |
| Issue: |
19 |
| Pages: |
pp. 8126 - 8133 |
| Keywords: |
"electrospray", "ICP spectrometry", "low-flow rate", "sample introduction" |
| Research Areas: |
Inorganic Analytical Chemistry |
| PDF version: |
 Click here to retrieve PDF version of paper (2MB) |
