Table 2.

Instrumental analysis conditions.

Compound name	Elemental composition	Ion	t_R (min)	Precursor	Product ion	CE (V)	R%	MQL ng L⁻¹
Compound name	Elemental composition	Ion	t_R (min)	(m/z)	(m/z)	CE (V)	R%	MQL ng L⁻¹
Acetaminophen	C₁₀H₉NO₂	[M + H]⁺	2.64	152	109.9	20	80	6.3
					65.1	34
					93	24
Caffeine	C₈H₁₀N₄O₂	[M + H]⁺	3.23	195	138	19	83	12.5
Caffeine	C₈H₁₀N₄O₂	[M + H]⁺	3.23	195	110	22	83	12.5
Diclofenac	C₁₄H₁₁Cl₂NO₂	[M + H]⁺	7.47	295.8	214.7	20	85	10.0
					249.9	12
					277.6	8
Sulfamethoxazole	C₁₀H₁₁N₃O₃S	[M + H]⁺	4.59	253.9	92	31	77	3.1
Sulfamethoxazole	C₁₀H₁₁N₃O₃S	[M + H]⁺	4.59	253.9	155.8	14	77	3.1
Trimethoprim	C₁₄H₁₈N₄O₃	[M + H]⁺	3.43	291.2	230	25	90	18.8