ISSN:
0306-042X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Field desorption mass spectrometry is applied to the positive identification of organochlorine insecticides and their related compounds residing in field soil environment. Additionally, standard field desorption mass spectra of these compounds are presented. Soil samples were collected in lettuce and spinach fields, and insecticides were extracted, cleaned up, and separated with thin-layer chromatography. Residue levels were measured by injecting the extract into a gas chromatograph equipped with an electron capture detector. Residues of p,p′-DDT and dieldrin in field soil samples were clearly identified by field desorption mass spectrometry using the emitter dipping method. Moreover, mixed residues of these insecticides were simultaneously confirmed. However, residues of insecticides and their related compounds other than p,p′-DDT and dieldrin could not be characterized. All spectra of standard showed prominent ions, and the ion was the base peak in all spectra obtained.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/bms.1200050903
Permalink
