【摘要】 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—SO₃^-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。更多还原

【Abstract】 The investigation on the adsorption property of SPU （Ⅱ） on Anqiu clay using UV spectrophotometer showed that it was adsorbed onto the clay particles with a few adsorption sites, and that its adsorption quantity was much larger than that of ordinary stabilizing agents and was affected largerly by the concentration of the added salts. The X-ray diffraction showed that no adsorption between layers of the clayd oceured. According to the data of zeta potential, it was suppose the -SO₃^- of SPU （Ⅱ） situated outside the clay particles leading to the enhancement of the zeta potential and the hydration of the clay particles. This was another reason why SPU （Ⅱ） was a good salt-resistant treating agent for thedrilling muds.更多还原