在液体核磁共振（NMR）实验使用的耗材中，NMR样品管用量非常大，通常需经清洗后回收利用.NMR样品管的清洗效率及清洗后的洁净程度直接影响到NMR实验的进程，清洗过程中产生的废液也将对环境产生影响.本文首先介绍了一款自主设计的手持便携式NMR样品管高压清洗器，并对该装置的结构和功能做了详细的说明.然后，对曾装存过不同溶剂和溶液的NMR样品管，分别利用该装置和商用NMR样品管清洗装置进行清洗，并比较了清洗效率和效果.最后，对利用此高压清洗器清洗NMR样品管时，NMR样品管的损伤程度进行了评估.结果证实，对于没有样品严重附着管壁的NMR样品管，本文设计的装置清洗效果良好、效率高；并且清洗过程中不使用有毒的有机溶剂，非常环保；而且对NMR样品管损伤较小.
The amount of sample tubes used in liquid-state nuclear magnetic resonance (NMR) experiments is large. It is often required that the sample tubes are cleaned and re-used. The cleaning efficiency and the degree of cleanness after cleaning directly affect the results of subsequent experiments. In the meanwhile, the waste produced during the cleaning process pollute the environment. In this work, a hand-held portable high-pressure cleaner for NMR sample tubes is developed, with its structure and function described in detail. Then, sample tubes with different solvents and solutions were cleaned with this apparatus and commercial NMR sample tube cleaning apparatus. The cleaning efficiency and cleanness were compared. Lastly, the degree of wear and tear on the NMR sample tube was evaluated after cleaning. The results demonstrated that the apparatus proposed in this work had a high cleaning performance and efficiency for the NMR sample tubes without heavy contamination, and caused less damage. The cleaning process does not require the use of any toxic organic solvent such that it is environment friendly.
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