通过电导率获取土壤粒径分布的替代方法

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Md. Farhad Hasan, H. Abuel-Naga
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引用次数: 0

摘要

本研究提出了一种通过电导率(EC)技术测定土壤粒度分布(PSD)的新方法。研究人员设计了一种新型导电率探针,探针由透明热塑性塑料(俗称丙烯酸)和黄铜电极组成。首先,计算土壤-水均质悬浮液在不同密度下的导电率,以获得每个测试土壤样本的校准曲线。在 PSD 分析过程中,当颗粒在重力作用下开始在地下室沉降时,测量不同时间间隔的导电率,然后将相应的导电率值与不同密度下的校准导电率值进行比对。建议的方法考虑了传统的斯托克斯定律来确定土壤颗粒的直径,并通过一般的通过百分比数学表达式来获得每种土壤的最终 PSD 曲线。随后,利用 EC 方法进行的 PSD 分析与比重计和激光衍射方法进行了验证,对于相同的土壤样品,在土壤颗粒(如粘土、淤泥和砂土)的不同分类下,总体上都能获得良好的一致性。最后,还进行了重现性测试,新的导电率探针在准确度和精密度方面都优于比重计方法。这项研究的结果旨在提出一种替代方法,利用导电率技术高精度、高效率地测定土壤的 PSD。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An Alternative Method of Obtaining the Particle Size Distribution of Soils by Electrical Conductivity
This study proposes a new method to determine the particle size distribution (PSD) of soils by considering the electrical conductivity (EC) technique. A new EC probe was designed with a transparent thermoplastic, commonly known as acrylic, and brass electrodes. At first, the EC of a soil–water homogeneous suspension was calculated at different densities to obtain a calibration curve of each tested soil sample. During the PSD analysis, as the particles started to settle down in the basement due to gravity, the EC was measured at different time intervals, and the corresponding EC values were then matched with the calibrated EC values at different densities. The proposed method considered the conventional Stokes’ law to determine the diameter of soil particles and the general percentage of passing mathematical expression to obtain the final PSD curve of each soil. The PSD analysis by the EC approach was later validated with that of hydrometer and laser diffraction methods, and in general, good agreements were obtained for identical soil samples at different classifications of soil particles such as clay, silt, and sand. Finally, reproducibility tests were also conducted and the new EC probe overperformed the hydrometer method in terms of both accuracy and precision. The finding from this study aimed to propose an alternative to determine the PSD of soils by using the EC technique with a high level of accuracy and efficiency.
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
期刊介绍: ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.
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