TY - JOUR
T1 - Optimisation of a solid-phase microextraction procedure for the determination of triazines in water with gas chromatography-mass spectrometry detection
AU - Frías, S.
AU - Rodríguez, M. A.
AU - Conde, J. E.
AU - Pérez-Trujillo, J. P.
PY - 2003/7/25
Y1 - 2003/7/25
N2 - A procedure based on solid-phase microextraction (SPME) and gas chromatography-mass spectrometry, operating in the chemical ionisation mode, was developed and optimised in order to determine 10 triazines in water samples. Five different SPME fibers available for analysis [polydimethylsiloxane (PDMS) 100 μm, polyacrylate (PA) 80 μm, PDMS-divinylbenzene (DVB) 65 μm, Carbowax (CW)-DVB 65 μm, and Carboxen (CAR)-PDMS 75 μm] were tested, and PDMS-DVB was selected. To enhance the sensitivity of the SPME, variables affecting adsorption and desorption steps such as temperature, time, pH and ionic strength of the solution were optimised. Detection limits obtained were ranged between 2 and 17 ng l-1, and precision values were below 8% for the selected PDMS-DVB fiber. The optimised method was applied to real water samples and no triazines were detected.
AB - A procedure based on solid-phase microextraction (SPME) and gas chromatography-mass spectrometry, operating in the chemical ionisation mode, was developed and optimised in order to determine 10 triazines in water samples. Five different SPME fibers available for analysis [polydimethylsiloxane (PDMS) 100 μm, polyacrylate (PA) 80 μm, PDMS-divinylbenzene (DVB) 65 μm, Carbowax (CW)-DVB 65 μm, and Carboxen (CAR)-PDMS 75 μm] were tested, and PDMS-DVB was selected. To enhance the sensitivity of the SPME, variables affecting adsorption and desorption steps such as temperature, time, pH and ionic strength of the solution were optimised. Detection limits obtained were ranged between 2 and 17 ng l-1, and precision values were below 8% for the selected PDMS-DVB fiber. The optimised method was applied to real water samples and no triazines were detected.
KW - Environmental analysis
KW - Pesticides
KW - Solid-phase microextraction
KW - Triazines
KW - Water analysis
UR - http://www.scopus.com/inward/record.url?scp=1542400323&partnerID=8YFLogxK
U2 - 10.1016/S0021-9673(03)00957-9
DO - 10.1016/S0021-9673(03)00957-9
M3 - Article
C2 - 12924558
AN - SCOPUS:1542400323
SN - 0021-9673
VL - 1007
SP - 127
EP - 135
JO - Journal of Chromatography A
JF - Journal of Chromatography A
IS - 1-2
ER -