MilliporeSigma

Analyses of chlorothalonil and dichlofluanid in greenhouse air.

Journal of AOAC International (1997-11-05)
F J Egea González, M L Castro Cano, J L Martínez Vidal, M Martínez Galera
ABSTRACT

A method to sample and analyze chlorothalonil and dichlofluanid in greenhouse air was evaluated. Analysis was performed by gas chromatography with electron capture detection and gas chromatography-mass spectrometry. Solid sorbents such as Chromosorb 102, Porapak R, Supelpak-2, Amberlite XAD-2, Amberlite XAD-4, and polyurethane foam were studied. The use of Soxhlet extraction and solvent desorption with sonication to desorb the pesticides from these sorbents were compared. A procedure to generate atmospheres containing known concentrations of these fungicides was established to study sorption capacity and sampling conditions. Breakthrough and storage of pesticides also were studied. Dissipation of analytes in a 24 h period after application was studied by using personal samplers in a field experiment.

MATERIALS
Product Number
Brand
Product Description

Supelco
ORBO 23 2-HMP on Amberlite XAD®-2 (20/40), 120/60 mg, W,W,W separators, O.D. × L 6 mm × 85 mm, pkg of 25 ea
Supelco
ORBO 49P (OVS) Supelpak-20 specially treated Amberlite XAD®-2 (20/40), 270/140 mg, RC,GFF,F,F (specially cleaned) separators, O.D. × L 13-8 mm × 75 mm , OSHA Versatile Sampler (OVS) Tube, pkg of 10 ea
Supelco
ORBO 43 Supelpak-20 specially treated Amberlite XAD®-2 (20/40), 100/50 mg, W,W,W (specially treated) separators, O.D. × L 8 mm × 100 mm, pkg of 50 ea
Supelco
Supelpak-2SVM, pkg of 500 g
Supelco
Supelpak-2, matrix styrene-divinylbenzene, 20-60 mesh, jar of 100 g
Supelco
ORBO 24 2-HMP on Amberlite XAD®-2 (20/40), 150/75 mg, W,W,W separators, O.D. × L 6 mm × 105 mm, pkg of 25 ea
Supelco
Supelpak-2, matrix styrene-divinylbenzene, 20-60 mesh, jar of 1000 g