According to Iraq, although certain petroleum hydrocarbons have direct toxic effects at high rates of exposure, these compounds are highly volatile and are lost to the atmosphere shortly after an oil spill.
据伊拉克说，虽然某些石油碳氢化合物在大量接触时会有直接的毒效，但这些化合物挥发性很强，石油泄漏后很快便消失在大气中。