Selective pressurized liquid extraction of polychlorinated biphenyls in sediment

被引：10

作者：

Westbom, Rikard ^{[1
]}

Sporring, Sune ^{[2
]}

Cederberg, Louise ^{[1
]}

Linderoth, Lars-A ^{[1
]}

Bjoerklund, Erland ^{[1
,2
]}

机构：

[1] Lund Univ, Dept Analyt Chem, SE-22100 Lund, Sweden

[2] Univ Copenhagen, Dept Pharmaceut & Analyt Chem, DK-2100 Copenhagen, Denmark

来源：

ANALYTICAL SCIENCES | 2008年 / 24卷 / 04期

关键词：

D O I：

10.2116/analsci.24.531

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A selective pressurized liquid extraction procedure (SPLE) was developed for a fast determination of polychlorinated biphenyls in sediment. The final method was performed at 100 degrees C with heptane/dichloromethane (90: 10, v/v) as extraction solvent for 2 x 5 min. Sulfuric acid impregnated silica was placed downstream of the sample in the extraction cell to remove interfering components. This simultaneous extraction/clean-up was performed in 20 min, with an average congener recovery of 92% compared to a classical 24 h Soxhlet methodology and 2 h of external manual clean-up.

引用

页码：531 / 533

页数：3

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