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KMID : 0385520090220010075
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Analytical Science & Technology
2009 Volume.22 No. 1 p.75 ~ p.81
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Study on the size-based separation of nano to micron particles in natural water and soil using flow and sedimentaion Field-flow fractionation
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Eum Chul-Hun
Kang Dong-Young
Lee Tae-Woo
Lee Seung-Ho
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Abstract
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A flow and sedimentation field-flow fractionation method has been used to characterize colloidal particles in environmental samples. The opposed flow sample concentration (OFSC) method was employed. The OFSC procedure was optimized for the analysis of particles in ground water with respect to various experimental parameters including sample introduction time, flow rates, etc. The effectiveness in low concentration and characterization of the OFSC-FlFFF was demonstrated with GW-1 and GW-2 ground water samples. Ground water of upto 100 mL has been successfully loaded, concentrated, and characterized by OFSC-FlFFF. The OFSC technique allow the application of FlFFF possible for the separation and characterization of colloidal particles in very low concentrations. The results show FFF provides a simplified alternative to existing off-line concentration procedures, and shows a high potential for the applications to the analysis of dilute colloidal particles in the environmental samples.
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KEYWORD
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FFF, size-based separation, colloidal particle
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