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首页> 外文期刊>Soil Science Society of America Journal >Solution Phosphorus-31 Nuclear Magnetic Resonance Spectroscopy of Soils from 2005 to 2013: A Review of Sample Preparation and Experimental Parameters
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Solution Phosphorus-31 Nuclear Magnetic Resonance Spectroscopy of Soils from 2005 to 2013: A Review of Sample Preparation and Experimental Parameters

机译:2005年至2013年土壤中的固溶磷31核磁共振谱:样品制备和实验参数综述

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摘要

Phosphorus nuclear magnetic resonance (P-31 NMR) spectroscopy is an important tool for the study of soil P and has significantly advanced our knowledge of soil P forms, particularly organic P; however, it must be used correctly to provide meaningful results. This review covers the P-31 NMR studies of soil published from 2005 to 2013. The first part discusses preparing samples for P-31 NMR, including extractants, pre- and post-extraction treatments, the physical state of the soil sample at the time of extraction, extraction length, the soil/extractant ratio, P recovery, P in residues, methods to concentrate extracts, redissolving samples for P-31 NMR experiments, the use of the internal standard methylene diphosphonic acid, and the potential for degradation with any of these steps. The second part of this review focuses on NMR experiment parameters, including delay times, proton decoupling, and experiment length. Potential concerns in these areas are noted, and suggestions are given for procedures to optimize the information obtained from a P-31 NMR experiment.
机译:磷核磁共振(P-31 NMR)光谱学是研究土壤P的重要工具,大大提高了我们对土壤P形态,特别是有机P形态的认识。但是,必须正确使用它才能提供有意义的结果。这篇综述涵盖了2005年至2013年发表的土壤的P-31 NMR研究。第一部分讨论了准备进行P-31 NMR的样品,包括萃取剂,萃取前和萃取后处理,当时土壤样品的物理状态萃取,萃取长度,土壤/萃取剂比率,磷的回收率,残留物中的磷,浓缩萃取物的方法,将P-31 NMR实验重新溶解的样品,内标亚甲基二膦酸的使用以及在任何情况下降解的可能性这些步骤。本文的第二部分重点介绍了NMR实验参数,包括延迟时间,质子去耦和实验时间。指出了这些领域中的潜在问题,并提出了一些程序,以优化从P-31 NMR实验获得的信息。

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