Authors: Stevenson, Christopher L.; Vo-Dinh, Tuan

Source: Applied Spectroscopy, Volume 47, Issue 4, Pages 387-532 (April 1993) , pp. 430-435(6)

Publisher: Society for Applied Spectroscopy

Abstract:

The use of lasers as excitation sources for molecular luminescence often results in improvements in sensitivity and limits of detection (LODs). Synchronous luminescence (SL) spectroscopy, in which both excitation and emission wavelengths are scanned simultaneously, provides a convenient means to improve selectivity (often dramatically) in the analysis of multicomponent mixtures using room-temperature luminescence. We report here on the first use of a dye laser as an excitation source for SL at room temperature. The performance of the laser synchronous luminescence (LSL) system is described for the analysis of four polyaromatic compounds; for one of these—tetracene—the LOD was 680 zeptomoles (10⁻²¹ mol) in the volume probed by the laser. In addition to impressive sensitivity and selectivity, the laser system used is quite small and can be considered as an attractive source for portable SL instruments designed for in-field screening of environmental samples.

Keywords: Laser spectroscopy; Luminescence; Synchronous excitation; Polycyclic aromatic hydrocarbons

Document Type: Research article

DOI: http://dx.doi.org/10.1366/0003702934334967

Affiliations: 1: Health and Safety Research Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6101

Publication date: 1993-04-01

More about this publication?

• The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge.
  
  Previously published as Bulletin (Society for Applied Spectroscopy)
• Editorial Board
• Information for Authors
• Submit a Paper
• Subscribe to this Title
• Membership Information
• Request copyrighted SAS materials
• Spectroscopic Nomenclature
• Focus Compendium
• ingentaconnect is not responsible for the content or availability of external websites

Related content

• In this: publication
• By this: publisher
• In this Subject: Analytical Chemistry
• By this author: Stevenson, Christopher L. ;  Vo-Dinh, Tuan

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers