Final answer:
High Performance Liquid Chromatography (HPLC) is a technique used in chemistry to separate different components of a mixture, in this case, phosphatidylcholines.
Step-by-step explanation:
High Performance Liquid Chromatography (HPLC) is a technique used in chemistry to separate different components of a mixture, in this case, phosphatidylcholines. In HPLC, a mobile phase (solution) is passed through a column packed with tiny particles (stationary phase). Some solutes are attracted strongly to the particles and travel slowly through the column, while others are only weakly attracted and pass through quickly. This differential movement leads to the separation and analysis of the solutes.