Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/59850
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Field intercomparison of a novel optical sensor for formaldehyde quantification |
Author: | Friedfeld, S. Fraser, M. Lancaster, D. Leleux, D. Rehle, D. Tittel, F. |
Citation: | Geophysical Research Letters, 2000; 27(14):2093-2096 |
Publisher: | American Geophysical Union (AGU) |
Issue Date: | 2000 |
ISSN: | 0094-8276 1944-8007 |
Statement of Responsibility: | Stephen Friedfeld, Matthew Fraser, David Lancaster, Darrin Leleux, Dirk Rehle and Frank Tittel |
Abstract: | <jats:p>A one‐week <jats:italic>in situ</jats:italic> intercomparison campaign was completed on the Rice University campus for measuring HCHO using three different techniques, including a novel optical sensor based on difference frequency generation (DFG) operating at room temperature. Two chemical derivatization methods, 2,4‐dinitrophenylhydrazine (DNPH) and <jats:italic>o</jats:italic>‐(2,3,4,5,6‐pentafluorobenzyl) hydroxylamine (PFBHA), were deployed during the daylight hours for three‐ to four‐hour time‐integrated samples. A real‐time optical sensor based on laser absorption spectroscopy was operated simultaneously, including nighttime hours. This tunable spectroscopic source based on difference frequency mixing of two fiber‐amplified diode lasers in periodically poled LiNbO<jats:sub>3</jats:sub> (PPLN) was operated at 3.5315 µm (2831.64 cm<jats:sup>−1</jats:sup>) to access a strong HCHO ro‐vibrational transition free of interferences from other species. The results showed a bias of −1.7 and −1.2 ppbv and a gross error of 2.6 and 1.5 ppbv for DNPH and PFBHA measurements, respectively, compared with DFG measurements. These results validate the DFG sensor for time‐resolved measurements of HCHO in urban areas.</jats:p> |
Rights: | Copyright 2000 by the American Geophysical Union |
DOI: | 10.1029/2000gl011523 |
Published version: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.130.1696 |
Appears in Collections: | Aurora harvest 5 IPAS publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.