This study presents a low-field hydrogen-1 nuclear magnetic resonance (¹H NMR) method to accurately determine water and oil in oil-contaminated coastal sand. Rapid, efficient separation of water and oil signals in the overlapping transverse relaxation (T ₂) spectra was achieved using a novel approach combining physical (paramagnetic ions Mn²⁺) and mathematical separation (deconvolution algorithm). High correlation coefficients of 0.998 and 0.982 were obtained between the prepared and NMR determined contents for water and oil together with the maximum errors of 0.84% and 0.54% for the water and oil content separately, which suggests NMR measurement of water and oil contents in oil-contaminated coastal sand is fairly accurate.

这项研究提出了一种低场氢1核磁共振（¹ H NMR）方法，可以准确地确定受石油污染的沿海沙子中的水和油。使用结合了物理（顺磁离子Mn ²⁺）和数学分离（解卷积算法）的新颖方法，可以在重叠的横向弛豫（T ₂）光谱中快速有效地分离水和油信号。所制备的水和油的NMR含量与NMR测定的含量之间具有高相关系数0.998和0.982，而水和油的含量的最大误差分别为0.84％和0.54％，这表明NMR测量了油中水和油的含量污染的沿海沙子是相当准确的。