待测样品溶液体积大, 有利于匀场与分辨率.
H7711 发表:How much solvent volume should I use?
To get good resolution you need at least 0.7 ml of solvent in a 5 mm NMR tube. If you have a limited amount of sample you can increase its effective concentration by reducing the solvent volume to 0.4 - 0.5 ml however you will need to spend more time shimming - an extra 10 minutes shimming!