Mass spectrometry halogen detection

ECD = electron capture detector FID = flame ionization detection GC = gas chromatography HECD = Hall electrolytic conductivity detector HRGC = high-resolution gas chromatography HSD = halogen-specific detector H2SO4 = sulfuric acid MS = mass spectrometry NR = not reported PID = photoionization detection UV = ultraviolet detection... 

Mohamad, A.H., Creed, J.J., Davison, T.M. and Caruso, J.A. (1989) Detection of halogenated compounds by capillary gas chromatography with helium plasma mass-spectrometry detection. Appl. Spec., 43, 1127-1131. 

The role of antimony halides as flame-retardant species in the gaseous phase is well established when SbX3 (X = chlorine or bromine) is introduced into premixed methane-oxygen flames, atomic antimony and antimony monoxide are found in the flame.43 Sb203 was shown by mass spectrometry to be present only in the preflame zone and no antimony-halogen species could be detected in the flame itself. 

Satzger R. D., Fricke F. L., Brown P. G. and Caruso J. A. (1987) Detection of halogens as positive ions using a He microwave induced plasma as an ion source for mass spectrometry, Spectrochim Acta, Part B 42 705-712. 

Creed J. T., Davidson T. M., Shen W. and Caruso J. A. (1990) Low-pressure helium microwave-induced plasma mass spectrometry for the detection of halogenated gas chromatographic effluents, J Anal At Spectrom 5 109—113. 

Helium (sniffing) currently uses mass spectrometry which enables leakage to be detected down to 10-12 Pa m3 s (this test can demand a high vacuum which may not be ideal for the component being tested). Certain halogens are also used for gas detection. 

BIOLOGICAL PROPERTIES TOC 0.36 mg/L Koc (1.38) highly mobile in soil moderately persistent in water (half-life 20-200 days) expected to leach extensively into groundwater aerobic half-life, soil, and air half-lives 4 weeks-6 months anaerobic half-life 16 weeks-24 months ground water half-life 8 weeks-12 months can be detected in water by EPA Method 611 methylene chloride extraction followed by gas chromatography with halogen specific detector, or EPA Method 625 gas chromatography plus mass spectrometry... 

Halogenated compounds have been detected in sea water. Using gas chromatography—mass spectrometry (GC—MS), Pedersen et al. (1974) were able to illustrate that lanosol (59) was a component of the dissolved organics... 

---