Fig 1.
Location map of sampling sites in Tierra del Fuego (Argentina, South America).
Data map: Google, CNES/Airbus, Maxar Technologies, Airbus, TerraMetrics, Landsat/Copernicus.
Fig 2.
Comparison of the antioxidant capacity of Sphagnum moss (SM) and peat (P) using the DPPH test and Trolox standard curve.
Results are presented as mean ± standard deviation (n = 16, replicates = 3).
Fig 3.
Comparison of the total phenolic content in Sphagnum moss (SM) and peat (P) using the gallic acid standard curve.
Results are presented as mean ± standard deviation (n = 16, replicates = 3).
Table 1.
Results of the leachable elemental content [mean and standard deviation (SD); mg/kg d.w.; n = 8 for each material, replicates = 3] at pH = 2 in peat and Sphagnum moss by inductively coupled plasma mass spectrometry (ICP-MS).
Table 2.
Results of the leachable elemental content [mean and standard deviation (SD); mg/kg d.w.; (n = 8 for each material, replicates = 3] at pH = 5 in peat and Sphagnum moss by inductively coupled plasma mass spectrometry (ICP-MS).
Table 3.
Percentage of element adsorbed onto Sphagnum moss and peat surface as a function of pH (concentration of 10 mg/L, 24 h; n = 8 for each material and pH value, replicates = 3).
Fig 4.
PCA score plot and loading plot performed on the obtained FTIR spectral data of the peat and Sphagnum moss samples (n = 8 for each material).
Fig 5.
PCA score plot and loading plot performed on the obtained FTIR spectral data of the peat and Sphagnum moss samples (n = 8 for each material).
A. Amide III, carbohydrates, aromatic ethers, Si-O-C groups, Si-O stretching, B. Clay minerals, kaolinite doublet, smectite, clays, quartz, C. Polysaccharides, alcoholic groups, clays, quartz, D. Cellulose, E. Proteinaceous origin, F. Lignin/phenolic backbone, phenolic (lignin) and aliphatic structures, carboxylate, carboxylic structures (humic acids), G. Lignin, secondary amides, H. Carboxylic acids, aromatic esters.