THE METHOD OF PREPARING SOIL SAMPLES FOR SOIL – WATER CONTACT ANGLE MEASUREMENT USING SESSILE-DROP TECHNIQUE

Q4 Agricultural and Biological Sciences
N. Matveeva, E. Milanovsky, O. Rogova
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引用次数: 1

Abstract

The method of soil samples preparation for measuring the (wetting) contact angle (CA) of the soil solid phase surface using membrane filters is proposed. The samples of kaolinite, a standard sample of chernozem and samples of agro-chestnut soil were taken for the experiment. The results of the CA measurements using two types of sample preparation for the analysis were compared. The first method of sample preparation was to apply a sample to a double-sided adhesive tape; the second method involved the deposition of suspensions of the studied samples of certain concentrations on membrane filters. The advantages and disadvantages of each sample preparation method are described. The significant difference in the obtained CA values depending on the sample preparation for measurement was revealed. The method of sample preparation with the use of membrane filters developed by the authors made it possible to reduce the CA measurement error by more than 2 times. Reducing the variation of the CA value of a single sample will allow comparing similar soil samples, including soils of the same type, but involved in different land use systems.
介绍了用固滴法测定土壤-水接触角所需土样的制备方法
提出了利用膜过滤器制备土壤固相表面(润湿)接触角(CA)的方法。采用高岭石样品、黑钙土标准样品和农板栗土样品进行试验。使用两种类型的样品制备分析的CA测量结果进行了比较。样品制备的第一种方法是将样品涂在双面胶带上;第二种方法是将特定浓度的研究样品的悬浮液沉积在膜过滤器上。描述了每种样品制备方法的优缺点。所获得的CA值的显著差异取决于样品制备的测量被揭示。利用膜过滤器制备样品的方法使CA的测量误差降低了2倍以上。减少单个样品的CA值的变化将允许比较类似的土壤样品,包括相同类型的土壤,但涉及不同的土地利用系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
0.90
自引率
0.00%
发文量
15
审稿时长
8 weeks
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