Northwest A&F University 1 article published in JoVE Environment Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique Siqian Liu1, Jian Zhou1, Lingyan Zhu1 1College of Natural Resources and Environment, Northwest A&F University The present protocol describes a simple and efficient method for the long-distance transport of perfluoroalkyl acids in wheat.