Highly Sensitive Real-Time Isotopic Quantification of Water by ATR-FTIR

Research output: Contribution to journalArticle

Abstract

A method has been developed to reliably quantify the isotopic composition of liquid water, requiring only immersion of a "ReactIR" probe in the sample under test. The accuracy and robustness of this method has been extensively tested using a deuterium/protium system, and substantial improvements in sensitivity were obtained using highly novel chemical signal amplification methods demonstrating a standard deviation of 247 ppb D (a D of 1.6 ‰). This compares favorably with other more costly and time-consuming techniques and is over 20 times more sensitive than any previously published FTIR study. Computational simulations of a model system match the experimental data and show how these methods can be adapted to a tritium/protium system.

Original languageEnglish
Pages (from-to)7500-7507
Number of pages8
JournalAnalytical Chemistry
Volume92
Issue number11
Early online date29 Apr 2020
DOIs
Publication statusPublished - 2 Jun 2020

ASJC Scopus subject areas

  • Analytical Chemistry

Fingerprint Dive into the research topics of 'Highly Sensitive Real-Time Isotopic Quantification of Water by ATR-FTIR'. Together they form a unique fingerprint.

Cite this