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해수중의 물질 분리 및 분석을 위한 Fl-FFF의 안정화 기법Stabilization Methods to Separate and Analyze Materials in Seawaters using Fl-FFF

Other Titles
Stabilization Methods to Separate and Analyze Materials in Seawaters using Fl-FFF
Authors
최수훈이상엽홍승관문지희
Issue Date
2009
Publisher
한국물환경학회
Keywords
Flow field-flow fractionation (Fl-FFF); Fl-FFF stabilization; Seawater; Separation; Flow field-flow fractionation (Fl-FFF); Fl-FFF stabilization; Seawater; Separation
Citation
한국물환경학회지, v.25, no.2, pp.288 - 294
Indexed
KCI
Journal Title
한국물환경학회지
Volume
25
Number
2
Start Page
288
End Page
294
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/121066
ISSN
2289-0971
Abstract
Flow field-flow fractionation (Fl-FFF) device has been widely used to verify the size and molecular weight of various colloids and organics. The Fl-FFF, however, generally uses carrier solutions with only low to moderate ionic strengths to exclude the high affinity of materials to the membrane under high ionic strength conditions. Thus, materials existing in seawaters have not been accurately analysed based on the hydrodynamic size and molecular weight using current Fl-FFF techniques. The highest ionic strength tested was up to 0.1 M, while seawater ionic strength is about 0.6 M. The aim of this study is to accurately measure the hydrodynamic size of particles under carrier solutions close to seawater conditions with the Fl-FFF. By employing various operating conditions during the Fl-FFF analyses, it was demonstrated that the flow conditions, the concentration of surfactants, and stabilization times were key factors in acquiring compatible data. Results have shown that the cross flow was more influential factor than the channel flow. The concentration of the surfactant was to be at least 0.05% and the minimum 15 hr of stabilization was needed for accurate and reproducible data acquisition under seawater condition.
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