Gas chromatography-electron capture detection

In this core, concentrations of PCBs (determined as Aroclor 1254 and 1260, by high resolution gas chromatography, electron capture detection and high resolution gas chromatography-low resolution mass spectrometry) were <30 ng and those of total DDT (p,p DDT + p,p DDD + p,p DDE) <5 ng g Campesan et al. (21) in 11 sediment samples from Valle di Brenta, determined by GC-ECD the following mean concentrations (ng gd.w.) ... 

Analytical methods for parent chloroacetanilide herbicides in soil typically involve extraction of the soil with solvent, followed by solid-phase extraction (SPE), and analysis by gas chromatography/electron capture detection (GC/ECD) or gas chromatog-raphy/mass spectrometry (GC/MS). Analytical methods for parent chloroacetanilides in water are similarly based on extraction followed by GC with various detection techniques. Many of the water methods, such as the Environmental Protection Agency (EPA) official methods, are multi-residue methods that include other compound classes in addition to chloroacetanilides. While liquid-liquid partitioning was used initially to extract acetanilides from water samples, SPE using... 

Gas chromatograph injector liner [for gas chromatography/electron capture detection (GC/ECD)], cyclouniliner insert, Restek (cat. No. 20337)... 

Glausch, A., Blanch, G.P., Schurig, V. (1996). Enantioselective analysis of chiral polychlorinated biphenyls in sediment samples by multidimensional gas chromatography-electron-capture detection after steam distillation-solvent extraction and sulfur removal. J. Chromatogr. A 723, 399 104. 

Dunnivant, F.M. and A.W. Elzerman. 1988. Determination of polychlorinated biphenyls in sediments, using sonication extraction and capillary column gas chromatography-electron capture detection with internal standard calibration. Jour. Assoc. Offic. Anal. Chem. 71 551-556. 

Schulz, D.E., G. Petrick, and J.C. Duinker. 1989. Complete characterization of polychlorinated biphenyl congeners in commercial Aroclor and Clophen mixtures by multidimensional gas chromatography-electron capture detection. Environ. Sci. Technol. 23 852-859. 

Dixit B, Nguyen, H, Dixit VM. 1991. Solid-phase extraction of fluoxetine and norfluoxetine from serum with gas-chromatography-electron-capture detection. J Chromatogr B 563 379. 

Xu T, Cho IK, Wang D, Rubio FM, Shelver WL, Gasc AME, Li J, Li QX (2009) Suitability of magnetic particle immunoassay for the analysis of PBDEs in Hawaiian euryhaline fish and crabs in comparison with gas chromatography/electron capture detection-ion trap mass spectrometry. Environmental Pollution 157 417 22... 

R. Zhao, S. Chu and X. Xu, Optimization of nonequilibrium liquid-phase microextraction for the determination of nitrobenzenes in aqueous samples by gas chromatography-electron capture detection. Analytical Sciences International Journal of the Japan Society for Analytical Chemistry, 2004, 20(4), 663-666. 

Abbreviations GC/EC, gas chromatography/electron capture detection GC/ECD, gas cliromato-graphy/electrolytic conductivity detection GCZFID, gas chromatography/flame ionization detection GC7MS, gas cliromatography/mass spectrometry... 

G. Fillmann, T.S. Galloway, R.C. Sanger, M.H. Depledge and J.W. Read-man, Relative performance of immunochemical (enzyme-linked immunosorbent assay) and gas chromatography-electron-capture detection techniques to quantify polychlorinated biphenyls in mussel tissues, Anal. Chim. Acta, 461 (2002) 75-84. 

Y. V. Gankin, A. E. Gorshteyn and A. Robbat-Jr, Identification of PCB congeners by gas chromatography electron capture detection employing a quantitative structure-retention model , Anal. Chem. 67 2548-2555 (1995). 

A. Glausch, J. Hahn and V. Schurig, Enantioselective determination of chiral 2,2, 3,3, 4,6-hexachlorobiphenyl (PCB 132), in human milk samples by multidimensional gas chromatography/electron capture detection and by mass spectrometry , Chemosphere 30 2079-2085 (1995). 

Hauser B. and P. Popp. 2001. Membrane-assisted solvent extraction of organochlorine compounds in combination with large-volume injection/gas chromatography-electron capture detection. J. Sep. Sci. 24 551-560. 

Lopez-Bianco, M.C., S. Blanco-Cid, B. Cancho-Grande, and J. Simal-Gandara. 2003. Application of single-drop microextraction and comparison with solid-phase microextraction and solid-phase extraction for the determination of a- and [1-endosulfan in water samples by gas chromatography-electron-capture detection. J. Chromatogr. A 984 245-252. 

Tor, A. 2006. Determination of chlorobenzenes in water by drop-based liquid-phase microextraction and gas chromatography-electron capture detection. J. Chromatogr. A 1125 129-132. 

Jasinski JS. 1989. Multiresidue procedures for the determination of chlorinated dibenzodioxins and dibenzofurans in a variety of foods using capillary gas chromatography-electron-capture detection. J Chromatogr 478 349-367. 

J. M. Moore and M. Klein, Identification of 03-monoacetyl-morphine in illicit heroin by using gas chromatography-electron-capture detection and mass spectrometry, J. Chromatogr., 154 16... 

In an alternative approach, cyanide and thiocyanate can be converted to cyanogen chloride using the chlorinating agent chloramine T. Conversion can be performed in solution or in the headspace. Conversion in solution followed by headspace analysis gave a detection limit of 5 ng/ml by gas chromatography/electron capture detection (GC/ECD) (72). Conversion in the headspace above acidified blood, in a precolumn packed with chloramine T powder and attached to the injection port of the GC, gave a detection limit of 50 ng/ml (73). 

Hu, M., Chen, H., Jiang, Y., Zhu, H. Headspace single-drop microextraction coupled with gas chromatography electron capture detection of butanone derivative for determination of iodine in milk powder and urine. Chem. Pap. 67(10), 1255-1261 (2013)... 

Chlorinated compounds were analyzed by gas chromatography-electron capture detection (GC-ECD) on a Vista 44 GC System equipped with a DB-1701 fused silica, capillary column (30 m, 0.25 inn I.d. J W Scientific). Helium and nitrogen were the carrier and make-up gases, respectively. The Injector and detector temperatures were 260 C and 285 C. The column oven was temperature programmed from 65°C (held 1 min) to 230°C at 25°C/min, held at 230°C for 7.4 min, and then heated to 245°C at lO C/min. The linear velocity at maximum temperature was ca. 50 cm/sec. All GC Injections In this study were splltless with the Inlet purged 1 minute after Injection. The retention time of decachloroblphenyl under these conditions was approximately 26 minutes. 

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