-transparent.png){kind=logo}
A headspace gas chromatographic (GC) method, which can be automated, has been developed for determination of methyl bromide. This method has been applied to wheat, flour, cocoa, and peanuts. Samples to be analyzed are placed in headspace sample vials, water is added, and the vials are sealed with Teflon-lined septa. After an appropriate equilibration time at 32 degrees C, the samples are analyzed within 10 h. A sample of the headspace is withdrawn and analyzed on a gas chromatograph equipped with an electron capture detector (ECD). Methyl bromide levels were quantitated by comparison of peak area with a standard. The standard was generated by adding a known amount of methyl bromide to a portion of the matrix being analyzed and which was known to be methyl bromide free. The detection limit of the method was 0.4 ppb. The coefficient of variation (CV) was 6.5% for wheat, 8.3% for flour, 3.3% for cocoa, and 11.6% for peanuts.
J W DeVries, and
J M Broge, and
J P Schroeder, and
R H Bowers, and
P A Larson, and
N M Burns
July 1989,
Zeitschrift fur Lebensmittel-Untersuchung und -Forschung,
J W DeVries, and
J M Broge, and
J P Schroeder, and
R H Bowers, and
P A Larson, and
N M Burns
March 1988,
Analytical chemistry,
J W DeVries, and
J M Broge, and
J P Schroeder, and
R H Bowers, and
P A Larson, and
N M Burns
July 1989,
Journal of chromatography,
J W DeVries, and
J M Broge, and
J P Schroeder, and
R H Bowers, and
P A Larson, and
N M Burns
March 2020,
Journal of pharmaceutical and biomedical analysis,
J W DeVries, and
J M Broge, and
J P Schroeder, and
R H Bowers, and
P A Larson, and
N M Burns
January 1986,
Journal - Association of Official Analytical Chemists,
J W DeVries, and
J M Broge, and
J P Schroeder, and
R H Bowers, and
P A Larson, and
N M Burns
July 2006,
Journal of chromatography. A,
J W DeVries, and
J M Broge, and
J P Schroeder, and
R H Bowers, and
P A Larson, and
N M Burns
January 1985,
IARC scientific publications,
J W DeVries, and
J M Broge, and
J P Schroeder, and
R H Bowers, and
P A Larson, and
N M Burns
October 1996,
Analytical chemistry,
J W DeVries, and
J M Broge, and
J P Schroeder, and
R H Bowers, and
P A Larson, and
N M Burns
January 1993,
Journal of AOAC International,
J W DeVries, and
J M Broge, and
J P Schroeder, and
R H Bowers, and
P A Larson, and
N M Burns
January 1989,
Journal - Association of Official Analytical Chemists,
