Identification of organochloine pesticide residues by ultraviolet solid-phase photolysis

Gas chromatography

“…Juvet et al (437) proposed photolytic degradation as a more reproducible substitute for all techniques dependent upon thermal degradation and showed that, in addition to polymer identification, trace additives of antioxidants and plasticizers in polymers may be identified and quantitatively determined. Photochemical degradation was shown to be an ideal approach for the determination of trace pesticide residues on food products (304), where all pesticides investigated-heptachlor, heptachlor epoxide, transchlordane, 1 -hydroxychlordene, chlordene, nonachlor, dieldrin, aldrin, p,p'-DDT, , '-DDE, and p,p'-DDDgave characteristic degradation patterns. The photolytic degradation of triglyceride esters (735) and of ethyl fluoride at 147 nm (138) were also reported.…”

Analytical methodology for bioactive compounds. Photochemically assisted analysis of chlorinated hydrocarbon pesticides in the presence of polychlorinated biphenyls

“…The chlorinated pesticides are of course not immune to photodegradation and form a variety of products depending upon conditions (9). This, however, can be quite helpful in identification, as well as quantification, of certain pesticides as recently described by Glotfelty (10) and Bills et (11). Bills (12) has also reported that mixtures of chlorinated pesticides can be identified in the presence of PCB's by trapping the GLC effluents, subjecting them to UV irradiation, and rechromatographing them to observe any interferences or changes which occur when both are present.…”

Determination of (Z)-9-tetradecen-1-ol formate, a Heliothis species mating disruptant, in air by electron-capture gas chromatography following photolytic cleanup

“…The key to the general utility of the method is the use of ultraviolet (UV) irradiation as a clean-up technique. The UV irradiation of either solutions or solids has been reported for both identification of pesticides (Banks and Bills, 1968;Glotfelty, 1972) and for extract cleanup (Caro, 1971;Leavitt et al, 1973).…”