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首页> 外文期刊>African Journal of Biotechnology >Physicochemical characteristics of geophagic clayey soils from South Africa and Swaziland
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Physicochemical characteristics of geophagic clayey soils from South Africa and Swaziland

机译：南非和斯威士兰地渗粘土土壤的物理化学特征

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Physicochemical properties of geophagic clayey soils?from South Africa and Swaziland were determined in order to appreciate their capability to perform the functions for which they are consumed and possible consequences of the practice in humans. Tests conducted included colour, texture, pH, electrical conductivity (EC), water retention capacity (WRC), organic matter (OM) content and cation exchange capacity (CEC). The colour of the clayey soils ranged from grey to red. The soils varied texturally from loam to clay and had pH values of between 5.0 and 7.4. Values obtained for EC and OM content were generally low but those for WRC of the clayey soils were above 50% for all samples. These clayey soils, due to their colour are inferred to contain different forms of iron oxide minerals including haematite and goethite, which may help alleviate symptoms of iron deficiency anaemia. Their relatively high WRC may increase their effectiveness in the absorption of moisture in the gastrointestinal tract and therefore confirms the possibility of using these clays in the treatment of diarrhoea.
机译：胫骨粘土土壤的物理化学特性？从南非和斯​​威士兰决定了解他们的能力，以履行它们所消耗的职能以及在人类的实践可能后果。进行的测试包括颜色，质地，pH，电导率（EC），水保留容量（WRC），有机物（OM）含量和阳离子交换能力（CEC）。粘土土壤的颜色从灰色到红色。土壤从壤土变化到粘土中，pH值为5.0和7.4。对于EC和OM含量获得的值通常很低，但所有样品的粘土土壤的WRC的值高于50％。由于它们的颜色，这些粘土污垢被推断为含有不同形式的氧化铁矿物，包括血液和霉菌，这可能有助于缓解缺铁性贫血的症状。它们相对较高的WRC可能会增加其在胃肠道中水分吸收的有效性，因此证实了在腹泻治疗中使用这些粘土的可能性。

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