Highly Sensitive Real-Time Isotopic Quantification of Water by ATR-FTIR.
Anal Chem
; 92(11): 7500-7507, 2020 06 02.
Article
en En
| MEDLINE
| ID: mdl-32347712
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 δD 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.
Texto completo:
1
Banco de datos:
MEDLINE
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
Anal Chem
Año:
2020
Tipo del documento:
Article
País de afiliación:
Reino Unido