沉积物表面酸碱性质测定方法研究  

Studies on the Measurement of Sediment Surface Acid-Base Properties

作　　者：路敏[1] 葛成凤[1] 郭君乐 朱佳美 曹晓燕[1,2] 

机构地区：[1]中国海洋大学化学与化工学院,山东青岛266100 [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,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2015年第9期78-85,共8页Periodical of Ocean University of China

基　　金：国家重点基础研究发展计划项目(2011CB409802);山东省自然科学基金项目(ZR2013DM018);海洋化学理论与工程技术教育部重点实验室(中国海洋大学)访问学者基金项目资助

摘　　要：本文选取胶州湾和长江口某站点的沉积物,对沉积物表面酸碱性质的测定方法进行了研究。在现有碱返滴定的基础上提出了双返滴定的模式,以酸返滴定进行空白消除,有效地简化了操作与计算过程。通过与碱返滴定和两边滴定的结果对照发现双返滴定更适合沉积物表面酸碱性质的研究,同时考察了双返滴定过程中不同条件对测定结果的影响,并针对本文样品确定了最佳实验条件。The titration methods for sediment surface acid-base properties were studied with the sedi- ments obtained from Jiaozhou Bay and Changjiang Estuary. Two-back-titration mode was proposed based on the base-back-titration. In this mode, the blank can be deducted by acid-back-titration which can make the operation and calculation much simpler. Compared with base-back-titration and two-side-titration, two-back-titration was more suitable for studying sediment surface acid-base properties. In addition, the effects of measurement conditions on the process and result were investigated for two-back-titration, and the most proper condition was determined for the samples studied in this paper.

关 键 词：沉积物 表面酸碱性质 双返滴定 

分 类 号：P734.4[天文地球—海洋化学]