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本文采用紫外光谱法测定浓度,研究SPU(Ⅱ)在安丘标准土上的吸附行为。表明它在粘土上以分子的少数的吸附点吸附,吸附量比常用处理剂大,并且很大程度地受溶液中外加盐的种类和浓度所影响。X光谱分析表明SPU(Ⅱ)在安丘标准土上基本没有层间吸附发生。认为SPU(Ⅱ)中的—SO_3~-基团是在土粒的外围飘在溶液中,提高土粒的电动电位,并且充分水化而对粘土起保护作用。这是SPU(Ⅱ)具有良好耐盐性的另一个原因。
In this paper, the concentration of SPU (Ⅱ) in the Anqiu standard soil was determined by UV spectrophotometry. It shows that it adsorbs on the clay as a minority of the adsorption sites of the molecule, adsorbs more than the usual treatment agents and is largely affected by the type and concentration of salt added to the solution. X-ray spectroscopy showed that there was almost no interlayer adsorption of SPU (Ⅱ) on Anqiu standard soil. It is considered that the -SO_3 ~ - group in SPU (Ⅱ) floats in the solution on the periphery of soil particles, increases the potential of soil particles and fully hydrates the clay. This is another reason that SPU (II) has good salt tolerance.