کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4979693 1453035 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Role of microgel formation in scavenging of chromophoric dissolved organic matter and heavy metals in a river-sea system
ترجمه فارسی عنوان
نقش تشکیل میکروگللور در تخلیه مواد آلی محلول کروموفوریک و فلزات سنگین در سیستم دریایی رودخانه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 328, 15 April 2017, Pages 12-20
نویسندگان
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