Fig. 1.

The effects of organic solvent composition in the separation buffer solution containing 70 mmol/L NaAc, 60 mmol/L TFA and 20 mmol/L SDS unchanged on the separation of four disinfectant active ingredients: a. 60:40; b. 70:30; c. 80:20.20 mg/L of mixed standard solution of BACs in a MeOH solution containing 2 mmol/L TFA. Peaks: 1. C₁₂-BAC; 2. C₁₄-BAC; 3. C₁₆-BAC; 4. C₁₈-BAC. Electrophoresis conditions: uncoated quartz capillary: 25 μm, 60.2 cm (effective length: 50 cm); detection wavelength: 214 nm; separation voltage: 8 kV; operating current: approximately 2.3 μA; injection pressure and time: 0.5 psi, 80 s; operating temperature: 25 °C.