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. Author manuscript; available in PMC: 2021 Sep 14.

Published in final edited form as: Chemosphere. 2018 Dec 24;220:629–636. doi: 10.1016/j.chemosphere.2018.12.171

Table 3.

Coefficients of determination (r²) in the four rivers derived by linear regression

Compound	Sucralose	Caffeine
Caffeine	0.04
Trimethoprim	0.94	0.0002
Losartan	0.91	0.01
Metoprolol	0.90	0.002
Diltiazem	0.86	0.004
Carbamazepine	0.84	0.01
Valsartan	0.84	0.0002
Propranolol	0.83	0.07
Sulfamethoxazole	0.81	0.4
Atenolol	0.48	0.004