Observation of Melting by Nuclear Magnetic Resonance

摘要: WE have developed a new method of observing melting and measuring points which exploits the motional narrowing nuclear magnetic resonance line at phase transition. Impurity premelting1 allows observation spin echo signal immediately below point. A plot amplitude versus temperature determines both impurity depressed or apparent point correction to this due impurities. These then provide true Knowledge freezing depression constant also gives concentration sample.