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Stir bar sorptive extraction for the determination of ppq-level traces of organotin compounds in environmental samples with thermal desorption-capillary gas chromatography-ICP mass spectrometry

Jordy Vercauteren, Christophe Pérès, Christophe Devos, Patrick Sandra UGent, Frank Vanhaecke UGent and Luc Moens UGent (2001) ANALYTICAL CHEMISTRY. 73(7). p.1509-1514
abstract
The extraction and preconcentration capabilities of a new extraction technique, stir bar sorptive extraction, were combined with the separation power of capillary gas chromatography (CGC) and the low limits of detection (LODs) of inductively coupled plasma mass spectrometry (ICPMS) for the determination of the organotin compounds tributyltin (TBuT) and triphenyltin (TPhT) in aqueous standard solutions, harbor water, and mussels (after digestion with tetramethylammonium hydroxide). Throughout, tripropyltin for TBuT and tricyclohexyltin for TPhT were used as internal standards to correct for variations in the derivatization and extraction efficiency, Calibration was accomplished by means of single standard addition. Derivatization to transform the trisubstituted compounds into sufficiently volatile compounds was carried out with sodium tetraethylborate, The compounds were extracted from their aqueous matrix using a stir bar of 1-cm length, coated with 55 muL of poly(dimethylsiloxane) (PDMS), After 15 min of extraction, the stir bar was desorbed in a thermal desorption unit at 290 degreesC for 15 min, during which the compounds were cold-trapped on a precolumn at -40 degreesC. Flash heating was used to rapidly transfer the compounds to the GC where they were separated on a capillary column with a PDMS coating. After separation, the compounds were transported to the ICP by means of a homemade heated (270 degreesC) transfer line. Monitoring of the Sn-120(+) signal by ICPMS during the run of the GC provided extremely low LODs for TPhT in water: 0.1 pg L-1 (procedure) and 10 fg L-1 (instrumental) and a repeatability of 12% RSD (n = 10). In harbor water, concentrations of 200 pg L-1 for TBuT and 22 pg L-1 for TPhT were found. In fresh mussels, a concentration of 7.2 ng g(-1) (dry weight) TPhT was found. The accuracy of the method was checked by the determination of TPhT in CRM477 (mussel tissue) and comparison of the result to that of an analysis of the same material with a classical liquid/liquid extraction with isooctane.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
AQUEOUS SAMPLES, BUTYLTIN, SPECIATION ANALYSIS, PHENYLTIN COMPOUNDS, SOLID-PHASE MICROEXTRACTION, FLAME PHOTOMETRIC DETECTION, WATER, SEDIMENT, HARBOR, FENTIN
journal title
ANALYTICAL CHEMISTRY
Anal. Chem.
volume
73
issue
7
pages
1509 - 1514
Web of Science type
Article
Web of Science id
000167841900029
JCR category
CHEMISTRY, ANALYTICAL
JCR impact factor
4.532 (2001)
JCR rank
1/67 (2001)
JCR quartile
1 (2001)
ISSN
0003-2700
DOI
10.1021/ac000714s
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
138539
handle
http://hdl.handle.net/1854/LU-138539
date created
2004-01-14 13:37:00
date last changed
2012-11-14 13:08:13
@article{138539,
  abstract     = {The extraction and preconcentration capabilities of a new extraction technique, stir bar sorptive extraction, were combined with the separation power of capillary gas chromatography (CGC) and the low limits of detection (LODs) of inductively coupled plasma mass spectrometry (ICPMS) for the determination of the organotin compounds tributyltin (TBuT) and triphenyltin (TPhT) in aqueous standard solutions, harbor water, and mussels (after digestion with tetramethylammonium hydroxide). Throughout, tripropyltin for TBuT and tricyclohexyltin for TPhT were used as internal standards to correct for variations in the derivatization and extraction efficiency, Calibration was accomplished by means of single standard addition. Derivatization to transform the trisubstituted compounds into sufficiently volatile compounds was carried out with sodium tetraethylborate, The compounds were extracted from their aqueous matrix using a stir bar of 1-cm length, coated with 55 muL of poly(dimethylsiloxane) (PDMS), After 15 min of extraction, the stir bar was desorbed in a thermal desorption unit at 290 degreesC for 15 min, during which the compounds were cold-trapped on a precolumn at -40 degreesC. Flash heating was used to rapidly transfer the compounds to the GC where they were separated on a capillary column with a PDMS coating. After separation, the compounds were transported to the ICP by means of a homemade heated (270 degreesC) transfer line. Monitoring of the Sn-120(+) signal by ICPMS during the run of the GC provided extremely low LODs for TPhT in water: 0.1 pg L-1 (procedure) and 10 fg L-1 (instrumental) and a repeatability of 12\% RSD (n = 10). In harbor water, concentrations of 200 pg L-1 for TBuT and 22 pg L-1 for TPhT were found. In fresh mussels, a concentration of 7.2 ng g(-1) (dry weight) TPhT was found. The accuracy of the method was checked by the determination of TPhT in CRM477 (mussel tissue) and comparison of the result to that of an analysis of the same material with a classical liquid/liquid extraction with isooctane.},
  author       = {Vercauteren, Jordy and P{\'e}r{\`e}s, Christophe and Devos, Christophe and Sandra, Patrick and Vanhaecke, Frank and Moens, Luc},
  issn         = {0003-2700},
  journal      = {ANALYTICAL CHEMISTRY},
  keyword      = {AQUEOUS SAMPLES,BUTYLTIN,SPECIATION ANALYSIS,PHENYLTIN COMPOUNDS,SOLID-PHASE MICROEXTRACTION,FLAME PHOTOMETRIC DETECTION,WATER,SEDIMENT,HARBOR,FENTIN},
  language     = {eng},
  number       = {7},
  pages        = {1509--1514},
  title        = {Stir bar sorptive extraction for the determination of ppq-level traces of organotin compounds in environmental samples with thermal desorption-capillary gas chromatography-ICP mass spectrometry},
  url          = {http://dx.doi.org/10.1021/ac000714s},
  volume       = {73},
  year         = {2001},
}

Chicago
Vercauteren, Jordy, Christophe Pérès, Christophe Devos, Patrick Sandra, Frank Vanhaecke, and Luc Moens. 2001. “Stir Bar Sorptive Extraction for the Determination of Ppq-level Traces of Organotin Compounds in Environmental Samples with Thermal Desorption-capillary Gas chromatography-ICP Mass Spectrometry.” Analytical Chemistry 73 (7): 1509–1514.
APA
Vercauteren, J., Pérès, C., Devos, C., Sandra, P., Vanhaecke, F., & Moens, L. (2001). Stir bar sorptive extraction for the determination of ppq-level traces of organotin compounds in environmental samples with thermal desorption-capillary gas chromatography-ICP mass spectrometry. ANALYTICAL CHEMISTRY, 73(7), 1509–1514.
Vancouver
1.
Vercauteren J, Pérès C, Devos C, Sandra P, Vanhaecke F, Moens L. Stir bar sorptive extraction for the determination of ppq-level traces of organotin compounds in environmental samples with thermal desorption-capillary gas chromatography-ICP mass spectrometry. ANALYTICAL CHEMISTRY. 2001;73(7):1509–14.
MLA
Vercauteren, Jordy, Christophe Pérès, Christophe Devos, et al. “Stir Bar Sorptive Extraction for the Determination of Ppq-level Traces of Organotin Compounds in Environmental Samples with Thermal Desorption-capillary Gas chromatography-ICP Mass Spectrometry.” ANALYTICAL CHEMISTRY 73.7 (2001): 1509–1514. Print.