通常二维谱F1维分辨率较差,F2维分辨率较好.即HSQC实验13C维度分辨率较差,1 H维度分辨率较好.而1H,13C-COSY实验13C维度分辨率较好,1H维度分辨率较差.提出一种通过HSQC和1H,13C-COSY叠合,取较弱的值储存并显示的方法增强分辨率,采用Bruker Topspin软件AU程序实现.该方法在不明显增加采样时间的情况下,可显著增强分辨率,信噪比也没有降低.同时抑制了F1噪声.处理后,谱图美观清晰.%In traditional two-dimensional (2D) NMR experiments, spectral resolution in the F1 dimension is usually higher than that in the F2 dimension. Therefore, in the HSQC experiments, the spectral resolution in the 113C dimension is lower than that in the 1H dimension. This is the opposite in the 1H, 13C-COSY experiments. In this work, a method for improving the resolution of 2D NMR spectrum was presented, in which HSQC and 1H, 13C-COSY spectra were overlapped, and then the weaker points were selected, saved and displayed. The method was implemented as an AU program within the Bruker Topspin framework. It was demonstrated experimentally that the method could improve spectral resolution, at no cost of signal-to-noise ratio. The method can also be used to suppress F1 noise.
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