Issue 21, 2021
From the journal:

Analyst

Isotopic trace analysis of water vapor with multipass cavity Raman scattering

Jaspreet Singh ORCID logo a  and  Andreas Muller ORCID logo a  

a Department of Physics, University of South Florida, Tampa, Florida, USA
E-mail: mullera@usf.edu

Abstract

Cavity-enhanced spontaneous Raman scattering was investigated as a means of simple and inexpensive isotopic water analysis. A multimode blue laser diode equipped with a feedback-generating multipass cavity provided a 100-fold Raman enhancement at a pump linewidth of 3.5 cm−1. Samples containing trace amounts of 1H2H16O were probed at deuterium-hydrogen concentration ratios ranging from 157 parts-per-million (local seawater) down to 8 parts-per-million (deuterium depleted water). All measurements were performed in argon or dried air at atmospheric pressure at 1H2H16O concentrations nearing 100 parts per billion with an uncooled camera at exposure times as short as a few minutes.

Graphical abstract: Isotopic trace analysis of water vapor with multipass cavity Raman scattering

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Article information

DOI
https://doi.org/10.1039/D1AN01254A
Article type
Paper
Submitted
13 Jul 2021
Accepted
14 Sep 2021
First published
16 Sep 2021

Analyst, 2021,146, 6482-6489

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Isotopic trace analysis of water vapor with multipass cavity Raman scattering

J. Singh and A. Muller, Analyst, 2021, 146, 6482 DOI: 10.1039/D1AN01254A

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