Direct Analysis of Volatile Methylsiloxanes in Gaseous Matrixes Using Atmospheric Pressure Chemical Ionization-Tandem Mass Spectrometry

被引:41
作者
Badjagbo, Koffi [1 ,2 ]
Furtos, Alexandra [1 ]
Alaee, Mehran [3 ]
Moore, Serge [4 ]
Sauve, Sebastien [1 ]
机构
[1] Univ Montreal, Dept Chem, Montreal, PQ H3C 3J7, Canada
[2] Phytronix Technol Inc, Quebec City, PQ G1K 3B3, Canada
[3] Environm Canada, Burlington, ON L7R 4A6, Canada
[4] Ctr Expertise Analyse Environm Quebec, Laval, PQ H7C 2M7, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
AMBIENT AIR; PROTON AFFINITY; LANDFILL GAS; SILOXANES; MS; BENZENE; BIOGASES; REMOVAL; MS/MS; IONS;
D O I
10.1021/ac901088f
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Atmospheric pressure chemical ionization-tandem mass spectrometry (APCI-MS/MS) was applied for the first time to the direct analysis of octamethylcyclotetrasiloxane (W) and decamethylcyclopentdsiloxane (D5) in gaseous matrixes without extraction or prior chromatographic separation. Mass spectrometric characteristics of both compounds under APCI conditions and their fragmentation behavior in MS/MS were investigated. Unlike the classical gas chromatography/mass spectrometry (GC/MS), which involves solvent extraction before gas chromatography, the proposed approach prevents contamination from GC system components and provides unambiguous structural assignments. The method performs well achieving good linearity (R(2) > 0.997), low limits of detection (4-6 mu g/m(3)), good precision (RSD < 1.0%) and accuracy (>93%), and a wide dynamic range. Its applicability to real-world samples was evaluated through measurements of D4 and D5 concentrations in air and biogas ne high sensitivity, selectivity, and reliability of this method render our approach a good alternative to the commonly used GC/MS method.
引用
收藏
页码:7288 / 7293
页数:6
相关论文
共 42 条
[1]   Real-time continuous monitoring methods for airborne VOCs [J].
Badjagbo, Koffi ;
Moore, Serge ;
Sauve, Sebastien .
TRAC-TRENDS IN ANALYTICAL CHEMISTRY, 2007, 26 (09) :931-940
[2]   Direct Atmospheric Pressure Chemical Ionization-Tandem Mass Spectrometry for the Continuous Real-Time Trace Analysis of Benzene, Toluene, Ethylbenzene, and Xylenes in Ambient Air [J].
Badjagbo, Koffi ;
Picard, Pierre ;
Moore, Serge ;
Sauve, Sebastien .
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 2009, 20 (05) :829-836
[3]   Confirmatory analysis of Trenbolone using accurate mass measurement with LC/TOF-MS [J].
Blokland, M. H. ;
Zoontjes, P. W. ;
Sterk, S. S. ;
Stephany, R. W. ;
Zweigenbaum, J. ;
van Ginkel, L. A. .
ANALYTICA CHIMICA ACTA, 2008, 618 (01) :86-93
[4]   The real-time analysis of gases by direct sampling-mass spectrometry: elemental and molecular applications [J].
Butcher, DJ .
MICROCHEMICAL JOURNAL, 2000, 66 (1-3) :55-72
[5]   Air monitoring of a coal tar cleanup using a mobile TAGA LPCI-MS/MS [J].
Chen, QF ;
Milburn, RK ;
DeBrou, GB ;
Karellas, NS .
JOURNAL OF HAZARDOUS MATERIALS, 2002, 91 (1-3) :271-284
[6]   Real time monitoring of hazardous airborne chemicals: A styrene investigation [J].
Chen, Qing Feng ;
Milburn, Rebecca K. ;
Karellas, Nick S. .
JOURNAL OF HAZARDOUS MATERIALS, 2006, 132 (2-3) :261-268
[7]   Exact mass measurement of product ions for the structural confirmation and identification of unknown compounds using a quadrupole time-of-flight spectrometer: a simplified approach using combined tandem mass spectrometric functions [J].
Clauwaert, K ;
Casteele, SV ;
Sinnaeve, B ;
Deforce, D ;
Lambert, W ;
Van Peteghem, C ;
Van Bocxlaer, J .
RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 2003, 17 (13) :1443-1448
[8]  
*CTR EXP AN ENV QU, 2007, DR12VMC CTR EXP AN E
[9]   Ab initio study of silyloxonium ions [J].
Cypryk, M ;
Apeloig, Y .
ORGANOMETALLICS, 1997, 16 (26) :5938-5949
[10]  
DeBortoli M., 1986, ENVIRON INT, V12, P343, DOI DOI 10.1016/0160-4120(86)90048-6