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研究了不同ｐＨ值下的Ｄ，Ｌ－丙氨酰－Ｄ，Ｌ－丝氨酸（Ａｌａ－Ｓｅｒ）及其稀土配合物的１Ｈ、１３ＣＮＭＲ谱，对于该种二肽的不同旋光异构体，有可能对其谱线进行区分和指认。测定了酸解常数和稀土配合物的络合稳定常数。通过分离Ａｌａ－Ｓｅｒ的重稀土配合物的接触位移和偶极位移。分析了不同异构体配合物的ＮＭＲ位移的原因。
1H, 13CNMR spectra of D, L-alanyl-D, L-serine (Ala-Ser) and their rare earth complexes at different pH values were studied. It is possible that different optical isomers of the dipeptide Its spectrum to distinguish and identify. The acid hydrolysis constants and complex stability constants of rare earth complexes were determined. Contact and dipole displacements of heavy rare earth complexes by separation of Ala-Ser. The reason for the NMR shift of different isomer complexes was analyzed.