Honey and sugar syrups have other various constituents, and it's trivially possible to tell them apart via GC/MS at far higher levels than ppb. https://zenodo.

Honey and sugar syrups have other various constituents, and it's trivially possible to tell them apart via GC/MS at far higher levels than ppb. https://zenodo.org/records/438103 https://zenodo.org/records/438103