Comparison of the Usefulness of SPE Cartridges for the Determination of β-Blockers and β-Agonists (Basic Drugs) in Environmental Aqueous Samples

Table 2

Chemical structures and properties (, ) of the target β-blockers and β-agonists.

Compounds	Molar mass; g/mol	Chemical structure
β-blockers
Acebutolol (ACEB)	336.43		1.77	9.20
Atenolol (ATEN)	266.34		0.16	9.60
Metoprolol; (MET)	267.36		1.88	9.68
Nadolol; (NAD)	309.40		0.71	9.67
Propranolol; (PROP)	259.34		−0.45	9.45
β-agonists
Salbutamol; (SAL)	239.30		0.64	9.2, 10.7
Terbutaline; (TERB)	225.28		0.90	8.8, 10.1