Campus Units

Ames Laboratory

Document Type

Article

Publication Version

Published Version

Publication Date

6-1994

Journal or Book Title

Analytical Chemistry

Volume

66

Issue

11

First Page

1911

Last Page

1917

DOI

10.1021/ac00083a022

Abstract

A new approach for quantitation in laser ablation-inductively coupled plasma atomic emission spectrometry (LA-ICPAES) is presented. A portion of the laser-ablated sample aerosol is diverted to an aerosol mass monitor to measure variations in the amount of sample ablated and transported to the ICP torch. This provides a normalization for variations in laser ablation efficiency due to changes in laser power and focus at the sample and variations in material transport out of the ablation cell and into the ICP torch. During the laser ablation sampling process, solution standards are nebulized and the aerosol is added to the laser-ablated aerosol to generate a standard addition curve for the analyte being determined. The standard addition procedure corrects for potential plasma-related matrix effects in the ICP emission signal resulting from the ablated sample. The precision of this method, for triplicate analyses for the determination of 16 elements in four glass samples, and the accuracy of this method relative to the nominal glass compositions are both approximately 10%.

Comments

Reprinted (adapted) with permission from Analytical Chemistry 66 (1994): 1911, doi: 10.1021/ac00083a022. Copyright 1994 American Chemical Society.

Copyright Owner

American Chemical Society

Language

en

File Format

application/pdf

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