China
Chinese Research Academy of Environmental Sciences
BEOM, straw biochar, FT-ICR-MS, molecular characteristics, environmental behaviour
Machine learning (ML), Spatial Stratified Heterogeneity Index (SHI), Parent Material Index (PMI), Index of Geoaccumulation (Igeo), Heavy metals (HMs)
OPEs, source identification, Influencing factors, Concentration prediction, Probabilistic health risk
Antimony isotope, Soil, Xikuangshan Sb mine, Geochemical process, Source apportionment