Quantification of Mineral Oil Aromatic Hydrocarbons (MOAH) in Anhydrous Cosmetics Using ¹H NMR

Figure 3

NRM spectra of a lip gloss sample. The blue ¹H NMR spectra show the signals of a direct measurement in cyclohexane/acetone-d₆, while the red spectra represent the result of the same sample following SPE cleanup. The interfering signals in the range 8.2–7.2 ppm are completely removed.