TY - JOUR
T1 - Determination of organotin compounds by headspace solid-phase microextraction-gas chromatography-pulsed flame-photometric detection (HS-SPME-GC-PFPD)
AU - Bravo, Manuel
AU - Lespes, Gaëtane
AU - De Gregori, Ida
AU - Pinochet, Hugo
AU - Gautier, Martine Potin
N1 - Funding Information:
Acknowledgements The authors acknowledge the Program ECOS-CONICYT (Scientific cooperation project between France and Chile, action C01E010) for financial support. M. Bravo thanks to Conicyt and the French Government for the fellowships awarded.
PY - 2005/12
Y1 - 2005/12
N2 - A method based on Headspace solid-phase microextraction (HS-SPME, with a 100 μm PDMS-fiber) in combination with gas-chromatography and pulsed flame-photometric detection (GC-PFPD) has been investigated for simultaneous determination of eight organotin compounds. Monobutyltin (MBT), dibutyltin (DBT), tributyltin (TBT), monophenyltin (MPhT), and the semi-volatile diphenyltin (DPhT), triphenyltin (TPhT), monooctyltin (MOcT), and dioctyltin (DOcT) were determined after derivatization with sodium tetraethylborate. The conditions used for the extraction and preconcentration step were optimised by experimental design methodology. Tripropyltin (TPrT) and diheptyltin (DHepT) were used as internal standards for quantification of volatile and semi-volatile organotin compounds, respectively. The analytical precision (RSD) for ten successive injections of a standard mixture containing all the organic tin compounds ranged between 2 and 11%. The limits of detection for all the organotin compounds were sub ng (Sn) L-1 in water and close to ng (Sn) kg-1 in sediments. The accuracy of the method was evaluated by analysis of two certified reference material (CRM) sediment samples. The HS-SPME-GC-PFPD was then applied to the analysis of three harbour sediment samples. The results showed that headspace SPME is an attractive tool for analysis of organotin compounds in solid environmental matrices.
AB - A method based on Headspace solid-phase microextraction (HS-SPME, with a 100 μm PDMS-fiber) in combination with gas-chromatography and pulsed flame-photometric detection (GC-PFPD) has been investigated for simultaneous determination of eight organotin compounds. Monobutyltin (MBT), dibutyltin (DBT), tributyltin (TBT), monophenyltin (MPhT), and the semi-volatile diphenyltin (DPhT), triphenyltin (TPhT), monooctyltin (MOcT), and dioctyltin (DOcT) were determined after derivatization with sodium tetraethylborate. The conditions used for the extraction and preconcentration step were optimised by experimental design methodology. Tripropyltin (TPrT) and diheptyltin (DHepT) were used as internal standards for quantification of volatile and semi-volatile organotin compounds, respectively. The analytical precision (RSD) for ten successive injections of a standard mixture containing all the organic tin compounds ranged between 2 and 11%. The limits of detection for all the organotin compounds were sub ng (Sn) L-1 in water and close to ng (Sn) kg-1 in sediments. The accuracy of the method was evaluated by analysis of two certified reference material (CRM) sediment samples. The HS-SPME-GC-PFPD was then applied to the analysis of three harbour sediment samples. The results showed that headspace SPME is an attractive tool for analysis of organotin compounds in solid environmental matrices.
KW - Canonical analysis
KW - Experimental design
KW - Gas chromatography-pulsed flame photometric detection (GC-PFPD)
KW - Organotin compounds
KW - Solid-phase microextraction
UR - http://www.scopus.com/inward/record.url?scp=28844478554&partnerID=8YFLogxK
U2 - 10.1007/s00216-005-0131-5
DO - 10.1007/s00216-005-0131-5
M3 - Article
C2 - 16328254
AN - SCOPUS:28844478554
SN - 1618-2642
VL - 383
SP - 1082
EP - 1089
JO - Analytical and Bioanalytical Chemistry
JF - Analytical and Bioanalytical Chemistry
IS - 7-8
ER -