A rapid and efficient determination of natural estrogens in soils by pressurised liquid extraction and gas chromatography-mass spectrometry

Josefine Beck; Kai Uwe Totsche; Ingrid Kögel-Knabner

doi:10.1016/j.chemosphere.2007.11.062

A rapid and efficient determination of natural estrogens in soils by pressurised liquid extraction and gas chromatography-mass spectrometry

Josefine Beck, Kai Uwe Totsche, Ingrid Kögel-Knabner

Chair of Soil Science

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

We present a new analytical procedure for the extraction and determination of natural estrogens in soils based on pressurised liquid extraction and GC-MS determination. After testing twelve solvents, acetone proved to be the most efficient extractant. The optimum extraction temperature is 60 °C. Soil extracts have to be purified and concentrated by C-18 solid phase extraction. The dried extracts are derivatised by N-methyl-N-(trimethylsilyl)trifluoro-acetamide before measurement by GC-MS. Recoveries of 79-103% with relative standard deviations ≤13% document reliability of this method. Further, rapidity of extraction and a low detection limit (1 ng kg^-1) represent an improvement of estrogen analysis in soils compared to established procedures.

Original language	English
Pages (from-to)	954-960
Number of pages	7
Journal	Chemosphere
Volume	71
Issue number	5
DOIs	https://doi.org/10.1016/j.chemosphere.2007.11.062
State	Published - Mar 2008

Keywords

Accelerated solvent extraction (ASE)
Agricultural soil
Pressurized liquid extraction (PLE)
Soil extraction
Steroids

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10.1016/j.chemosphere.2007.11.062

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title = "A rapid and efficient determination of natural estrogens in soils by pressurised liquid extraction and gas chromatography-mass spectrometry",

abstract = "We present a new analytical procedure for the extraction and determination of natural estrogens in soils based on pressurised liquid extraction and GC-MS determination. After testing twelve solvents, acetone proved to be the most efficient extractant. The optimum extraction temperature is 60 °C. Soil extracts have to be purified and concentrated by C-18 solid phase extraction. The dried extracts are derivatised by N-methyl-N-(trimethylsilyl)trifluoro-acetamide before measurement by GC-MS. Recoveries of 79-103% with relative standard deviations ≤13% document reliability of this method. Further, rapidity of extraction and a low detection limit (1 ng kg-1) represent an improvement of estrogen analysis in soils compared to established procedures.",

keywords = "Accelerated solvent extraction (ASE), Agricultural soil, Pressurized liquid extraction (PLE), Soil extraction, Steroids",

author = "Josefine Beck and Totsche, {Kai Uwe} and Ingrid K{\"o}gel-Knabner",

note = "Funding Information: This research was supported by the Hochschul- und Wissenschaftsprogramm (HWP-II): Fachprogramm “Chancengleichheit f{\"u}r Frauen in Forschung und Lehre”. Additionally, we want to thank for financial support by Deutsche Forschungsgemeinschaft (To 184/5-2). ",

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AU - Beck, Josefine

AU - Totsche, Kai Uwe

AU - Kögel-Knabner, Ingrid

N1 - Funding Information: This research was supported by the Hochschul- und Wissenschaftsprogramm (HWP-II): Fachprogramm “Chancengleichheit für Frauen in Forschung und Lehre”. Additionally, we want to thank for financial support by Deutsche Forschungsgemeinschaft (To 184/5-2).

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N2 - We present a new analytical procedure for the extraction and determination of natural estrogens in soils based on pressurised liquid extraction and GC-MS determination. After testing twelve solvents, acetone proved to be the most efficient extractant. The optimum extraction temperature is 60 °C. Soil extracts have to be purified and concentrated by C-18 solid phase extraction. The dried extracts are derivatised by N-methyl-N-(trimethylsilyl)trifluoro-acetamide before measurement by GC-MS. Recoveries of 79-103% with relative standard deviations ≤13% document reliability of this method. Further, rapidity of extraction and a low detection limit (1 ng kg-1) represent an improvement of estrogen analysis in soils compared to established procedures.

AB - We present a new analytical procedure for the extraction and determination of natural estrogens in soils based on pressurised liquid extraction and GC-MS determination. After testing twelve solvents, acetone proved to be the most efficient extractant. The optimum extraction temperature is 60 °C. Soil extracts have to be purified and concentrated by C-18 solid phase extraction. The dried extracts are derivatised by N-methyl-N-(trimethylsilyl)trifluoro-acetamide before measurement by GC-MS. Recoveries of 79-103% with relative standard deviations ≤13% document reliability of this method. Further, rapidity of extraction and a low detection limit (1 ng kg-1) represent an improvement of estrogen analysis in soils compared to established procedures.

KW - Accelerated solvent extraction (ASE)

KW - Agricultural soil

KW - Pressurized liquid extraction (PLE)

KW - Soil extraction

KW - Steroids

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DO - 10.1016/j.chemosphere.2007.11.062

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SN - 0045-6535

VL - 71

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EP - 960

JO - Chemosphere

JF - Chemosphere

IS - 5

ER -

A rapid and efficient determination of natural estrogens in soils by pressurised liquid extraction and gas chromatography-mass spectrometry

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Keywords

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