Determination of residual dalapon in sugarcane by gas chromatograph equipped with electron capture detector (GC-ECD)

2020 ◽  
Vol 12 (3) ◽  
Author(s):  
S.-H. Tseng ◽  
Y.-J. Lin ◽  
P.-C. Chang ◽  
S.-S. Chou ◽  
H.-M. Chang
Keyword(s):  
Electron Capture ◽  
Electron Capture Detector ◽  
Gas Chromatograph

Microdetermination of Bioethanomethrin

1975 ◽  
Vol 58 (4) ◽  
pp. 781-784
Author(s):  
Donald A George ◽  
Leslie M Mcdonough
Keyword(s):  
Spectral Data ◽  
Electron Capture ◽  
Synthetic Pyrethroid ◽  
Pyrethroid Insecticide ◽  
Electron Capture Detector ◽  
Gas Chromatograph ◽  
Mass Spectral Data ◽  
Acid Moiety ◽  
Mass Spectral

Abstract A microanalytical method was developed for the determination of the experimental synthetic pyrethroid insecticide Bioethanomethrin ((5- benzyl-3-furyl) methyl trans-(+)-3-( cyclopentylidenemethyl)-2,2 -dimethylcyclopropanecarboxylate). After saponification, trichloroacetyl chloride is used to form an ester from the alcohol moiety, and trichloroethanol is used to form an ester from the acid moiety. Infrared and mass spectral data support the expected structures of the derivatives formed. Nanogram sensitivity is realized by utilizing a gas chromatograph with an electron capture detector.

Gas Chromatographic Determination of N-Butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine and α,α,α-Trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine in Formulations

1971 ◽  
Vol 54 (3) ◽  
pp. 711-712
Author(s):  
Martha Fuzesi
Keyword(s):  
Gas Chromatography ◽  
Quantitative Determination ◽  
Electron Capture ◽  
Chromatographic Method ◽  
Chromatographic Determination ◽  
Electron Capture Detector ◽  
Reference Solution ◽  
Gas Chromatographic Method

Abstract A gas chromatographic method is described for the quantitative determination of N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-tolindine and α,α,α-trifluoro-2,6-dinitro-N,N-dipropyI-p-toluidine herbicides in formulations. The sample is extracted with benzene, and equal amounts of sample and reference solution in the same concentration range are analyzed by gas chromatography, using an electron capture detector and an SE-30/Diatoport S column. The method has been applied successfully to laboratory-prepared and commercial samples.

Determination of indicator polychlorinated biphenyls (PCBs) by gas chromatography–electron capture detector

Chemosphere ◽  
2013 ◽  
Vol 93 (8) ◽  
pp. 1556-1560 ◽  
Author(s):  
Samuel Afful ◽  
Johannes A.M. Awudza ◽  
Stevester K. Twumasi ◽  
Shiloh Osae
Keyword(s):  
Gas Chromatography ◽  
Polychlorinated Biphenyls ◽  
Electron Capture ◽  
Electron Capture Detector

Capillary Gas Chromatographic Determination of T-2 Toxin, HT-2 Toxin, and Diacetoxyscirpenol in Cereal Grains

1984 ◽  
Vol 67 (6) ◽  
pp. 1105-1107
Author(s):  
Huguette Cohen ◽  
Michel Lapointe
Keyword(s):  
Electron Capture ◽  
Impact Ionization ◽  
Chromatographic Determination ◽  
Fused Silica ◽  
Electron Capture Detector ◽  
Resolving Power ◽  
Cereal Grains ◽  
Gas Chromatography Mass Spectrometry ◽  
Silica Column

Abstract A capillary gas chromatographic (GC) method using an electron capture detector is described for determining T-2 and HT-2 toxins and diacetoxyscirpenol (DAS) in cereal grains at levels as low as 100 ppb for T-2 and DAS and 50 ppb for HT-2. Samples are extracted with methanol-water according to the Scott method, and further purified on a silica gel cartridge and a cyano column. Heptafluorobutyrylimidazole (HFBI) is added to form the esters of the analytes. Ester(s) of T-2, HT-2 and DAS are separated on a 30 m × 0.32 mm DB-5 fused silica column and measured with a "Ni electron capture detector. Samples were confimed by gas chromatography/mass spectrometry using electron impact ionization and single ion monitoring at the molecular mass of 501.11 m/z for T-2, 665.08 m/z for HT-2, and 502.12 m/z for DAS at 10 000 resolving power. The method was applied to wheat, oats, and barley. Average recoveries ranged from a low of 65% for T- 2 in barley to a high of 99% for DAS in oats.

scholarly journals Simultaneous Determination of Florfenicol and Florfenicol Amine in Fish, Shrimp, and Swine Muscle by Gas Chromatography with a Microcell Electron Capture Detector

2006 ◽  
Vol 89 (5) ◽  
pp. 1437-1442 ◽  
Author(s):  
Suxia Zhang ◽  
Fengyun Sun ◽  
Jiancheng Li ◽  
Linli Cheng ◽  
Jianzhong Shen
Keyword(s):  
Gas Chromatography ◽  
Detection Limit ◽  
Simultaneous Determination ◽  
Electron Capture ◽  
Solid Phase ◽  
Electron Capture Detector ◽  
Phase Extraction ◽  
Chromatography Method ◽  
Residue Study

Abstract A rapid and sensitive gas chromatography method was developed for the simultaneous determination of florfenicol (FF) and its metabolite florfenicol amine (FFA) in fish, shrimp, and swine muscle. The extracted samples were defatted with hexane and cleaned up by solid-phase extraction using Oasis MCX cartridges. The eluate was evaporated to dryness, and residues were derivatized and determined by gas chromatography with a microcell electron capture detector. Overall average recoveries ranged from 81.7 to 109.7% for fish, 94.1 to 103.4% for shrimp, and 71.5 to 91.4% for swine muscle. The detection limit was 0.5 ng/g for FF and 1 ng/g for FFA, respectively. The method was validated for the determination of incurred swine muscle samples in an actual residue study.

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