Long-chain fluorosurfactants, based on a lineup of eight carbon atoms (C8), enter the body more readily than shorter analogues, and they can break down to form PFOA.

• 所谓的长链含氟界面活性剂是指八个碳原子排成一列（C8），会比碳链较短的类似化合物更容易进入生物体内，而且会分解形成PFOA。