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Measurement of stable isotope ratios of halogenated organic compounds by liquid chromatographic, high-temperature combustion isotope ratio mass spectrometry
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DOI：10.1016/j.aca.2026.346061.png)
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Abstract
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• A high-temperature (600°C), high-pressure (5.2 MPa) LC-IRMS combustion interface was developed. • Chlorinated and brominated haloacetic acids achieved Δδ13C within ±1‰ with 94–108% recovery. • Trichloroacetic acid, previously difficult to analyze reliably by LC-IRMS, was successfully measured. • The method is applicable to polar, nonvolatile aromatic chlorinated compounds and phenols.
Keywords:
Compound-specific isotope analysis
LC-IRMS
Haloacetic acids
PFAS
High-temperature combustion
Carbon isotope ratio (δ13C)
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