摘要
为了探索利用核磁共振技术测量乙醇汽油低含水量的方法,测量了不同含水量乙醇汽油的核磁共振横向弛豫时间,发现横向弛豫时间不随含水量的变化而呈现一定规律性的变化,因而尝试加入NH4NO3、NaOH、CuSO4和MnCl2.4H2O来扩大含水量对核磁共振横向弛豫时间的影响。实验结果表明:加入MnCl2.4H2O可使横向弛豫时间随含水量的增加而增加,并拟合出了相应的经验公式。在此基础上提出了乙醇汽油低含水量的核磁共振测量方法,通过测量实例验证了这一方法的有效性和可靠性。
The transverse relaxation time of ethanol-gasoline in different water content has been measured in order to investigate the NMR method for measuring ethanol-gasoline water content.The outcome indicates that the transverse relaxation time doesn＇t show a regular change with the increasing water content.For this reason,NH4NO3,NaOH,CuSO4 and MnCl2·4H2O have been used tentatively to expand the influence of ethanol-gasoline water content on transverse relaxation time.The results show that：If MnCl2·4H2O is added to ethanol-gasoline,a quadratic relationship will exist between the transverse relaxation time and the water content.Thus,an innovative method has been found to measure the water content of ethanol-gasoline and the validity and reliability of this method has been verified by experiment.
出处
《大学物理实验》
2013年第1期7-11,共5页
Physical Experiment of College
基金
国家级大学生创新训练计划项目(201210425061)
关键词
乙醇汽油
含水量
核磁共振
横向弛豫时间
ethanol-gasoline
water content
NMR
transverse relaxation time
