A comparison of trace metal profiles of neem biodiesel and commercial biofuels using high performance ICP-MS

► Neem biodiesel was produced from neem kernels and fruit using a two-step acid-base catalyzed esterification process. ► The basic physical properties of neem biodiesel were in agreement with those of regular petrodiesel. ► The neem biodiesel and commercial biofuels were compared in terms of their trace elemental profiles using ICP-MS. ► Forty elements were detected in the neem biofuel and a greater level of purity was found in comparison with B100.