Table 1.

Summary of the best fits for the linear combination (LC) fittings of the bulk-XANES spectra and the corresponding goodness of fit factors (R-factor and reduced χ²). A lower R-factor and reduced χ² indicate a better fit

Sample	Best LCF fit	R-factor	Reduced χ2
Soil1	98% fluoxetine + 2% Na2SiF6	0.042	0.036
	71% MgF2 + 13% NaF + 16% CaF2	0.060	0.086
Soil2	84% fluoxetine + 13% Na2SiF6 + 3% MgF2	0.033	0.026
	65% MgF2 + 20% Na2SiF6 + 15% FAp	0.084	0.067
Soil3	80% fluoxetine + 20% Na2SiF6	0.029	0.020
	56% MgF2 + 28% FAp + 16% Na2SiF6	0.072	0.049
Soil4	69% fluoxetine + 31% Na2SiF6	0.172	0.108
	51% MgF2 + 38% Na2SiF6 + 11% CaF2	0.218	0.139
SL1	48% Na-TFMS + 28% FAp + 24% Na2SiF6	0.054	0.061
	50% FAp + 40% Na2SiF6 + 10% MgF2	0.064	0.049
SL2	47% Na-TFMS + 33% FAp + 20% Na2SiF6	0.018	0.006
	54% FAp + 35% Na2SiF6 + 11% MgF2	0.026	0.010
SL3	49% Na2SiF6 + 27% FAp + 24% NaF	0.029	0.009
	44% NaF + 35% Na2SiF6 + 21% Na-TFMS	0.031	0.010
SL4	48% Na2SiF6 + 34% NaF + 18% CaF2	0.040	0.012
	89% Na2SiF6 + 11% tolylfluanid	0.104	0.031
SL5	42% Na2SiF6 + 40% NaF + 18% CaF2	0.040	0.012
	42% NaF + 39% Na2SiF6 + 19% PFOS	0.048	0.015
SL6	92% Na2SiF6 + 8% NaF	0.144	0.044
	99% Na2SiF6 + 1% PFOS	0.147	0.046