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Details for article 6 of 8 found articles
| Title: |
Laser-Based Fluorescence Eem Instrument for In-Situ Groundwater Monitoring |
| Author: |
Taylor, Todd A. Jarvis, George B. Xu, Hong Bevilacqua, Anthony C. Kenny, Jonathan E. |
| Appeared in: |
Instrumentation science & technology |
| Paging: | Volume 21 (1993) nr. 3-4 pages 141-162 |
| Year: |
1993 |
| Contents: |
A fluorescence excitation-emission matrix (EEM) instrument is described which employs laser excitation and optical fiber light delivery for remote sensing applications. Ultraviolet laser light is generated at a variety of discrete wavelengths by pumping a Raman shifter with the third or fourth harmonic of a Nd:YAG laser, and this Raman-shifted light is used for fluorescence excitation to generate EEM spectra. Seven-meter optical fibers are used for laser beam delivery and fluorescence light collection, and a diode array detector is used to detect fluorescence emission spectra. As a test of the capability of this instrument, the composition of a two-component mixture of the groundwater pollutants carbazole and p-cresol is determined quantitatively by least-squares analysis of the mixture's fluorescence EEM. Detection limits were in the ppb range and the linear dynamic range was better than 3 orders of magnitude. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 6 of 8 found articles
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