Typical Steps of Solid-Phase Extraction Common-used solvent compatibility chart Polarity sequence of common-used solvents SPE Method Optimization Pesticides and Veterinary Medicines Residues 20 Organochlorine Pesticide Residues in Lake Water Monocrotophos Residues in Drinking Water Atrazine in Water Carbaryl in Water Antibiotics Cefaclor in Water Oxytetracycline in Water Sulfonamides Antibiotics (Sulfadiazine, sulfamethazine, and sulfamethoxazole) in Water Typical Persistent Organic Pollutants Polychlorinated Biphenyls in Water 2,4,6-Trichlorophenol and Pentachlorophenol in Water PAHs in Water Di(2-ethylhexyl)phthalate (DEHP) in Water Exclusive Applications Oil and Grease in Water Azo Dyes