1 Subjects: “...infrared Fourier transform spectroscopy...”

2 Subjects: “...visible and near-infrared reflectance spectroscopy...”

3 Subjects: “...visible and near-infrared reflectance spectroscopy...”

4 Subjects: “...ICP-OES spectroscopy...”

5 Subjects: “...laser-induced breakdown spectroscopy...”

6 Subjects: “...nuclear magnetic resonance spectroscopy...”

7 Subjects: “...gas chromatography ion mobility spectroscopy (GC-IMS)...”

8 Subjects: “...31P nuclear magnetic resonance spectroscopy (31P NMR)...”

9 Subjects: “...spectroscopy...”

10 Subjects: “...gas chromatography ion mobility spectroscopy (GC-IMS)...”

11 Subjects: “...NMR spectroscopy...”

12 Subjects: “...spectroscopy...”

13 Subjects: “...Raman spectroscopy...”

14 Subjects: “...nuclear magnetic resonance hydrogen spectroscopy...”

15 Subjects: “...NMR spectroscopy...”

16 Subjects: “...ATR-FTIR spectroscopy...”

17 Subjects: “...ATR-FTIR spectroscopy...”

18 Subjects: “...ATR-FTIR spectroscopy...”