期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 328, 期 -, 页码 12-20出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2016.12.064
关键词
Microgel; Aggregation; Chromophoric dissolved organic matter; Heavy metals; Scavenging
资金
- Ministry of Science and Technology (MOST)
- Ministry of Education of Taiwan, ROC [MOST 104-2611-M-110-019, DOE 01C030703]
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan [KMU-TP105A11, KMU-TP105A29]
We use riverine and marine dissolved organic carbon (DOC) polymers to examine their aggregation behavior, and to evaluate the roles of microgel formation in scavenging of chromophoric dissolved organic matter (CDOM) and heavy metals in a river-sea system. Our results indicate that riverine and marine microgels did not exhibit very much difference in size and self-assembly curve; however, the assembly effectiveness ([microgel]/DOC) of marine samples was much higher than riverine. Instead of concentration of DOC, other factors such as types and sources of DOC polymers may control the microgel abundance in aquatic environments. After filtering water samples (microgels removed), the CDOM and selected metals (Cu, Ni, Mn) in the filtrate were quantified. CDOM and metals were concurrently removed to an extent via DOC polymer re-aggregation, which also suggested that the microgels had sequestering capability in CDOM and metals. This finding provides an alternative route for CDOM and heavy metals removal from the water column. As such the process of re-aggregation into microgels should then be considered besides traditional phase partitioning in the assessment of the ecological risk and fate of hazardous materials. (C) 2017 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据