Revealing full chemical forms of lead in wine with combined XRF-NMR technologies

Open Access

Figure 4.

¹³C NMR spectrum of lead citrate dimer C₁₂H₁₀O₁₄Pb₃ as a control parameter when switching from ¹³C to ²⁰⁷Pb frequencies within a Double Resonance TXI probe (see Methods).

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