郑轩,杨桂朋,曹晓燕

• 1:中国海洋大学海洋化学理论与工程技术教育部重点实验室

摘要(Abstract)：

本文对常用的染料亚甲基蓝(MB)在海洋沉积物上的吸附行为进行了研究,发现它的吸附机理主要是在沉积物上的表面吸附和微孔作用,吸附与黏土矿物的含量有一定的相关性。在实验浓度范围内,MB在3种不同处理方式沉积物上的吸附行为都可以用Freundlich等温式来描述。通过改变吸附条件发现,随着盐度的增加,吸附能力减小,而温度的改变,对吸附能力的影响并不明显。此外,通过向体系中加入不同表面活性剂来模拟双溶质体系的方法,对MB与表面活性剂的竞争吸附行为进行了研究。结果发现在2种介质中,吐温20(Tween20)的加入对吸附的影响均不大;十六烷基三甲基溴化铵(CTAB)的加入使MB的吸附能力减弱,在蒸馏水中抑制作用更加明显;在海水中,十二烷基苯磺酸钠(SDBS)对吸附有抑制作用,而在蒸馏水中,SDBS却对吸附起到促进作用。

关键词(KeyWords)： 亚甲基蓝;海洋沉积物;吸附;Freundlich等温式;表面活性剂

Abstract:

Keywords:

基金项目(Foundation): 国家杰出青年科学基金项目(40525017);; 国家自然科学基金项目(40876037);; 山东省科技攻关计划项目(2006GG2205024);; 教育部“长江学者”奖励计划;; 山东省“泰山学者”建设工程专项经费项目资助

作者(Author): 郑轩,杨桂朋,曹晓燕

DOI: 10.16441/j.cnki.hdxb.2011.z1.022

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