Optimisation of on-channel preconcentration in flow field-flow fractionation for the determination of size distributions of low molecular weight colloidal material in natural waters

被引：54

作者：

Lyvén, B ^{[1
]}

Hassellöv, M

Haraldsson, C

Turner, DR

机构：

[1] Gothenburg Univ, Dept Analyt & Marine Chem, S-41296 Gothenburg, Sweden

[2] Swedish Natl Testing & Res Inst, S-50115 Boras, Sweden

来源：

ANALYTICA CHIMICA ACTA | 1997年 / 357卷 / 03期

关键词：

field flow fractionation; size distribution; colloidal material; natural waters;

D O I：

10.1016/S0003-2670(97)00565-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Flow FFF with UV detection has been used to determine the size distributions of colloidal material in natural waters. The method has been optimised with respect to flow rates, buffer composition and membrane type. The use of an on-channel preconcentration (focusing) technique allows very low colloid concentrations to be fractionated. The preconcentration process gives close to quantitative recovery with a detection Limit equivalent to 9 mu mol l(-1) DOC for a 1.74 mi sample. (C) 1997 Elsevier Science B.V.

引用

页码：187 / 196

页数：10

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