刘敏,刘晓月,李苓,曹晓燕

• 1:中国海洋大学化学化工学院
• 2: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/海洋高等研究院
• 3:青岛海洋科学与技术试点国家实验室海洋生态与环境科学实验室

摘要(Abstract)：

选取两处组成差异较大的近海表层沉积物进行逐级化学分离处理,通过研究处理后的沉积物以及吸附活性组分差异较大的实际沉积物对磷的吸附特征,及沉积物原样和分级处理后样品的pH吸附曲线,探讨了近海沉积物组分对磷吸附过程的贡献。结果表明,化学分级处理能够有效除去沉积物中相应的活性组分,导致其吸附特征发生明显改变:逐级处理后的样品总体呈现出对磷的化学吸附作用逐渐减弱,物理吸附作用相应增强的趋势,与原样相比,相同条件下的吸附量均有所增加。碳酸盐以及金属氧化物等对化学吸附有明显贡献。近海沉积物原样以及依次去除碳酸盐和有机质的沉积物样品对磷吸附的pH边曲线均呈现抛物线变化趋势,盐酸处理后的样品与原样品吸附量随pH变化的趋势较为平行,而进一步去除有机质后pH边曲线则发生了明显变化。

关键词(KeyWords)： 化学逐级分离处理;近海沉积物;磷;吸附

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41676064);; 国家重点研究发展计划项目(2016YFA0601301)资助~~

作者(Author): 刘敏,刘晓月,李苓,曹晓燕

DOI: 10.16441/j.cnki.hdxb.20200286

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