Fast simultaneous determination of BHA and TBHQ antioxidants in biodiesel by batch injection analysis using pulsed-amperometric detection

► Amperometric simultaneous determination of antioxidants BHA and TBHQ in biodiesel. ► Simple biodiesel dilution prior to injection using an electronic pipette. ► Pulsed-amperometry provides sensitive and selective simultaneous determinations. ► Batch-injection analysis provides high precision (RSD<1%), accuracy, and speed.