An Extremely Sensitive Method Has Recently Been Developed for Measuring ${ }_{6}^{14} \mathrm{C}$

question 3

Multiple Choice

An extremely sensitive method has recently been developed for measuring ${ }_{6}^{14} \mathrm{C}$ concentrations in organic materials.What is this method?

• A) acid titration
• B) nuclear magnetic resonance
• C) gas chromatography
• D) atomic absorption spectrometry
• E) mass spectrometry

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