Traces of vanadium in large-temperature combustion products and solutions form droplets of molten vanadates. These attack the passivation levels on metals and result in superior temperature corrosion, which is a priority especially for internal combustion engines. Molten sulfate and guide particulates even have this kind of impact. DNA. Arsenic, https://broadfar.com/oraco-global-trends-in-heat-not-burn-products/