Issue 9, 2017

Argon fluoride LA-LEAF for rapid arsenic quantitation

Abstract

Coupling laser-induced fluorescence to laser ablation can reduce detection limits relative to LIBS. The wing of the broadband ∼193.3 nm emission from unmodified argon fluoride lasers can excite arsenic fluorescence via its 193.76 nm ground state transition for a simple fluorescence scheme. We present argon fluoride-excited laser-ablation laser-excited atomic fluorescence (LA-LEAF) measurements in steel and copper under argon and helium atmospheres. Because the ArF laser saturates the absorption transition and the steel samples show substantial nonspecific iron fluorescence, it is necessary to optimize the laser energy in addition to interpulse delay. LODs are slightly lower under helium (1.0 ppm in steel, 0.15 ppm in copper). These detection limits represent a modest improvement over previous LODs with LIBS, but suggest potential for improvement with line narrowing of the ArF laser.

Graphical abstract: Argon fluoride LA-LEAF for rapid arsenic quantitation

Article information

Article type
Paper
Submitted
11 三月 2017
Accepted
05 四月 2017
First published
05 四月 2017

J. Anal. At. Spectrom., 2017,32, 1697-1704

Argon fluoride LA-LEAF for rapid arsenic quantitation

J. A. Merten, C. A. Jones and P. D. Tribbett, J. Anal. At. Spectrom., 2017, 32, 1697 DOI: 10.1039/C7JA00092H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements