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
收藏
页码：531 / 533
页数：3
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