Determination of lower sub ppt levels of environmental analytes using high-powered concentration system and high-performance liquid chromatography with fluorescence detection

被引：21

作者：

Akiyama, R ^{[1
]}

Takagai, Y ^{[1
]}

Igarashi, S ^{[1
]}

机构：

[1] Ibaraki Univ, Fac Engn, Dept Mat Sci, Ibaraki 3168511, Japan

来源：

ANALYST | 2004年 / 129卷 / 05期

关键词：

D O I：

10.1039/b403228d

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The proposed method was successful in the determination and separation of lower sub ppt levels of polycyclic aromatic hydrocarbons (PAHs). In this study, a new phase separation phenomenon (i.e., homogeneous liquid - liquid extraction) was developed that rapidly and simply separated an immiscible liquid phase from water-miscible organic solvents. One liter of sample solution was preconcentrated by a solid phase extraction method, then the obtained eluate (5 mL) was further preconcentrated to just 20 mL by this homogeneous liquid - liquid extraction. The 20 mL sedimented phase was directly injected into the high-performance liquid chromatography with fluorescence detection (FL-HPLC). The entire preconcentration factor was 50,000-fold. Six kinds of PAHs were determined in the range of 3.0 x 10(-18) similar to 4.5 x 10(-11) mol L-1. These chemicals were also satisfactorily separated.

引用

页码：396 / 397

页数：2

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