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通过移动多核核核磁共振分析土壤:,和的量化

Morten K Sørensen^1,2,3, Camilla Lemming⁴, Ole N Jensen¹

¹NanoNord A/S, Skjernvej 3, DK-9220 Aalborg Ø, Denmark.

Analytical chemistry

|October 16, 2024

概括

移动核磁共振 (NMR) 光谱为现场土壤分析提供了一种快速,无化学物质的方法,准确量化,和. 这种技术提供了可靠的结果,与实验室方法相提并论,支持可持续农业.

科学领域:

农业科学农业科学
分析化学分析化学
土壤科学土壤科学
频谱学是一种光谱学.

背景情况:

可持续的作物生产依赖于土壤肥力,需要准确的土壤分析.
传统的土壤分析方法往往耗时,昂贵,需要化学试剂.
在土壤中量化总元素含量带来了重大的分析挑战.

研究的目的:

引入移动核磁共振 (NMR) 光谱作为土壤元素分析的快速,无化学品的替代方案.
为了在现场准确量化新鲜土壤样本中的 (P), (Al) 和 (Na).
根据已建立的实验室方法评估移动NMR的性能.

主要方法:

使用移动P,Al,Na和HNMR光谱仪进行直接的土壤分析.
使用移动NMR传感器分析了40个丹麦农业土壤样本.
与诱导合等离子体 - 光学发射光谱法 (ICP-OES) 的NMR结果进行了比较,使用四酸和水域消化.

主要成果:

在移动NMR和实验室分析之间取得了良好的一致性,具有高相关系数 (P为0.91,Al为0.98,Na为0.90).
在特定的度范围内,以较短的测量时间证明了P,Al和Na的准确量化.
从27个AlNMR组件中,NMR提供了对物种化和粘土含量预测的额外见解.

结论:

移动NMR光谱是一种可行的,准确和高效的工具,用于现场的土壤元素分析.
该方法通过提供快速,经济有效和环保的土壤测试来支持可持续农业.
该技术分析新鲜样品并提供物种信息的能力提高了其在土壤科学中的实用性.

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