Determination of Methyl 3, 3-Dimethyl-4-Pentenoate and 3-Chloro-4-Fluoronitrobenzene in Atmosphere by Colletion Method Using Polystyrene Gel Cartridge

Abstract

An analytical method of pesticide intermediates, methyl 3, 3-dimethyl-4-pentenoate and 3-chloro-4-fluoronitrobenzene, in atmosphere has been developed. Those compounds in atmosphere were collected by using a commercially available polystyrene gel cartridge (Sep-Pak Plus PS-1) and then were eluted with 5mL of hexane from the catridge. They were concentrated and analyzed by high-resolution gas chromatography/mass spectrometry using selected monitoring technique. The detection limits of methyl 3, 3-dimethyl-4-pentenoate and 3-chloro-4-fluoronitrobenzene were 1.0 and 0.3ng/m³, respectively. The recoveries of methyl 3, 3-dimethyl-4-pentenoate and 3-chloro-4-fluoronitrobenzene were 97.8% and 96.0%, respectively. Humidity of air and small temperature variation did not affect collection efficiency.