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Title: Quantifying Carbon-14 for Biology Using Cavity Ring-Down Spectroscopy

Journal Article · · Analytical Chemistry
 [1];  [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

A cavity ring-down spectroscopy (CRDS) instrument was developed using mature, robust hardware for the measurement of carbon-14 in biological studies. The system was characterized using carbon-14 elevated glucose samples and returned a linear response up to 387 times contemporary carbon-14 concentrations. Carbon-14 free and contemporary carbon-14 samples with varying carbon-13 concentrations were used to assess the method detection limit of approximately one-third contemporary carbon-14 levels. Sources of inaccuracies are presented and discussed, and the capability to measure carbon-14 in biological samples is demonstrated by comparing pharmacokinetics from carbon-14 dosed guinea pigs analyzed by both CRDS and accelerator mass spectrometry. Here, the CRDS approach presented affords easy access to powerful carbon-14 tracer techniques that can characterize complex biochemical systems.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1367975
Report Number(s):
LLNL-JRNL-693042
Journal Information:
Analytical Chemistry, Vol. 88, Issue 17; ISSN 0003-2700
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 27 works
Citation information provided by
Web of Science

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Cited By (8)

Radiocarbon Tracers in Toxicology and Medicine: Recent Advances in Technology and Science journal May 2019
A cavity ring-down spectrometer for study of biomedical radiocarbon-labeled samples journal July 2018
Laser Spectroscopy for Monitoring of Radiocarbon in Atmospheric Samples journal September 2019
Are Biotransformation Studies of Therapeutic Proteins Needed? Scientific Considerations and Technical Challenges journal November 2019
Broadband photoacoustic spectroscopy of CH 4 14 with a high-power mid-infrared optical frequency comb journal January 2019
14C-Cobalamin Absorption from Endogenously Labeled Chicken Eggs Assessed in Humans Using Accelerator Mass Spectrometry journal September 2019
Nanotracing and cavity-ring down spectroscopy: A new ultrasensitive approach in large molecule drug disposition studies journal October 2018
Mid-infrared monocrystalline interference coatings with excess optical loss below 10 ppm preprint January 2020

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